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Mirror Creation and Cluster Configuration

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Mirror Creation and Cluster Configuration

Create your DataKeeper volumes and your cluster. See Creating a DataKeeper Volume Resource in WSFC for reference. *IMPORTANT: The iSCSI Target Role only supports DataKeeper Volumes that are mirrors of Simple Volumes placed on Basic Disks. If any of your mirrors are…

Safe Creation of a Shared-Storage Volume Resource

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Safe Creation of a Shared-Storage Volume Resource

DataKeeper allows mirrors to be created on shared volumes where more than one system has access to the same physical storage. The shared volume can be on the source side of the mirror or on the target side. Note: Dynamic disks are not supported with Shared Storage…

Switching Over a Mirror

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Switching Over a Mirror

The Switchover Mirror function enables you to switch over all the mirrors in a job or just one of the mirrors in a job. A “mirror” includes all variants for mirrors such as standard single-target replication and complex geometries such as multi-target…

Deleting a Mirror

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Deleting a Mirror

This action discontinues replication and removes the mirror from the associated job. The target volume is unlocked and made fully accessible. Select the job that contains the mirror you want to delete. Right-click on the mirror and choose Delete Mirror or…

Creating a Mirror

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Creating a Mirror

Before creating a mirror, ensure the following: You have created a job to hold the mirror. The volume on both the source and target systems must be of the NTFS file system type. The target volume must be greater than or equal to the size of the source…

Deleting a Mirror

SIOS DataKeeper for Windows Technical Documentation » FAQs » Deleting a Mirror

Question What actually happens when you delete a mirror? Answer The data remains on both sides, but the target and source data are no longer synchronized. The target volume is unlocked and made fully accessible.

Inability to Create a Mirror

SIOS DataKeeper for Windows Technical Documentation » FAQs » Inability to Create a Mirror

Question Why can’t I create a mirror? Answer The common cause of this problem is that the volume on either source or target is in use by another process. Stop the process that is accessing the volume and try again. The SIOS DataKeeper software requires…

Creation of iSCSI Virtual Disks

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Creation of iSCSI Virtual Disks

Perform the following on the primary server, wherever the iSCSI Target server is online at the moment. From Server Manager, navigate to File and Storage Services and select iSCSI. Click on the link “To create an iSCSI virtual disk, start the New iSCSI Virtual Disk…

Creating Other Server Resource in WSFC

NO TOC » SIOS Protection Suite for Windows » Clustering » Creating Other Server Resource in WSFC

When creating an Other Server resource in WSFC, you will be prompted for a storage resource (DataKeeper resource) twice. You will check the first one, but do not need to check the second dialog. Click the “checkbox” for the first dialog “Select…

Changing the Compression Level of an Existing Mirror

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Changing the Compression Level of an Existing Mirror

The compression level of the mirror is set during mirror creation and applies to that specific mirror only. To change the compression level of an existing the mirror, edit the properties of the mirror from within the DataKeeper GUI. Select the mirror and click on…

User Interface – Shows Only One Side of the Mirror

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » User Interface – Shows Only One Side of the Mirror

If the SIOS DataKeeper UI shows a volume as a source and its corresponding target as available or a volume as a target with the corresponding source volume as available, you can use the command line utility to force an update to the SIOS DataKeeper GUI or delete the…

System Event Log – Create Mirror Failed in the GUI

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » System Event Log – Create Mirror Failed in the GUI

Error/Message Create Mirror Failed in the GUI. Description This can result if a vmms.exe program is holding on to volume and preventing SIOS DataKeeper from locking it.

Create a Mirror and Rename Job and Delete Job Actions Grayed Out

SIOS DataKeeper for Windows Technical Documentation » FAQs » Create a Mirror and Rename Job and Delete Job Actions Grayed Out

Question Why are the Create a Mirror, Rename Job and Delete Job actions grayed out? Answer If a node that is part of the job is down, these actions will not be enabled.

Mirror Properties

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Mirror Properties

Select a job in the Job Summary pane and right-click to choose Mirror Properties. This dialog displays the following information about the job, source and target systems: Job Name State (current state of the job; for example, Active) Source…

Failed to Create Mirror

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Failed to Create Mirror

User Interface – Failed to Create Mirror – Application Event Log Error/Message Logged in the Application Event Log: File: .\GuiThread.cpp Line: 3099 Attempt to connect to remote system REMOTESERVER failed with error 5. Please ensure that the local…

Change Mirror Endpoints

SIOS DataKeeper for Windows Technical Documentation » FAQs » Change Mirror Endpoints

Question Can I change the mirror endpoints (IP address) of a system currently associated with an existing mirror? Answer Yes. The EMCMD called CHANGEMIRRORENDPOINTS allows you to change the endpoints of a mirrored volume that is configured on 3 nodes or fewer. (If…

Change Mirror Type

SIOS DataKeeper for Windows Technical Documentation » FAQs » Change Mirror Type

Question Can you change the mirror type of an existing mirror from Synchronous to Asynchronous or vice-versa? Answer Yes, you can change the mirror type using the EMCMD CHANGEMIRRORTYPE command.

Mirror State Definitions

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » Mirror State Definitions

The following numbers are used by the system to internally describe the various states. They are used by EMCMD, and they are also the state numbers found in event log entries. -1: Invalid State 0: No Mirror 1: Mirroring 2: Mirror is resyncing 3: Mirror is…

User Interface – Failed to Create Mirror

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » User Interface – Failed to Create Mirror

User Interface – Failed to Create Mirror, Event ID 137 Error/Message Failed to create the mirror. Event Id: 137 System Event Log Unable to initialize mirror on the target machine. Volume Device: Source Volume: E Target Machine: 10.17.103.135 Target Volume:…

Using DKCE to Enable Multi-Site File Share Resources with Windows Server 2008R2 WSFC

NO TOC » SIOS Protection Suite for Windows » Clustering » Using DKCE to Enable Multi-Site File Share Resources with Windows Server 2008R2 WSFC

Use the following procedure to protect File Share resources using SIOS DataKeeper and Microsoft Failover Cluster (WSFC). *IMPORTANT NOTE: DataKeeper Cluster Edition registration with Failover Cluster is automatic and occurs 60 seconds after detecting a Failover…

Relocation of Intent Log

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Relocation of Intent Log

To relocate the Intent Log (bitmap file), please perform the following on all servers involved: *LEAVE THE MIRROR IN THE MIRRORING STATE! Do not pause it and then move the bitmap file. If you have more than one DataKeeper mirror, move all mirrors to a single system…

Replacing a Target

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Replacing a Target

When replacing the target volume, you must either break the mirror or delete the mirror in order to ensure a full resync of the data from the source volume to the target volume when the target volume is back in place. Though similar to the Pause and Unlock, breaking…

Installation of the iSCSI Target

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Installation of the iSCSI Target

From the Server Manager menu, select “Add Roles and Features” from the “Manage” drop-down. Select the “Role-based or feature-based installation” option. From the list of servers presented, select the appropriate server. On the…

Switchover in an N-Shared x N-Shared Configuration

NO TOC » SIOS Protection Suite for Windows » Clustering » Switchover in an N-Shared x N-Shared Configuration

In a multi-shared storage environment between two sites (as shown in the diagram below), each server in each site has access to the storage being shared between the servers at that site. When a DataKeeper mirror is created, one server in each site will be designated…

Removing a Shared System

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes » Removing a Shared System

To remove a shared system from either side of the mirror, bring up the Manage Shared Volumes dialog and uncheck the Include box for the system to be removed. When you click Done, the job will be updated so that the system is not part of the job. Warning: If a shared…

Windows Server 2012 MMC Snap-in Crash

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » Windows Server 2012 MMC Snap-in Crash

Description When using the DataKeeper user interface (MMC Snap-in) on Windows Server 2012, the mmc.exe process may crash unexpectedly due to an internal .Net or Windows Presentation Foundation (WPF) issue. The error may show up on the screen and/or the event…

Reassigning a Job

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Reassigning a Job

Use the Reassign Job function to move an existing mirror from one job to another without deleting the mirror. Select the job from the middle Summary panel. Right-click and select Reassign Job or select Reassign Job from the Actions panel. Select an existing…

Deleting a Job

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Deleting a Job

Select the job in the left Console Tree pane of the main DataKeeper window. You can select Delete Job from the Actions pane or right-click on the selected job and choose Delete Job from the menu that displays. Select Yes to delete the selected job and…

Reclaim Full Capacity of Target Drive

SIOS DataKeeper for Windows Technical Documentation » FAQs » Reclaim Full Capacity of Target Drive

Question How do I reclaim the full capacity of my target drive when I no longer need it for mirroring? Answer The file system on the target drive is overlaid by SIOS DataKeeper, thereby making it smaller than the actual partition size. Although Disk Management…

Adding a Shared System

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes » Adding a Shared System

To add a shared system to either the source or target side of a mirror, you must be connected to that system. You can connect to the system prior to starting the Manage Shared Volumes dialog, or you can click Connect to Server from within the dialog. In either case,…

Creating a Job

SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup » Creating a Job

If not already connected, connect to the server where you want to create a job. From the right Actions pane, select Create Job. The Job Wizard will prompt you for a Job Name and Description. Enter the appropriate information and select Create Job to…

Extending a Traditional 2-Node Cluster to a Shared-Replicated Configuration

NO TOC » SIOS Protection Suite for Windows » Clustering » Extending a Traditional 2-Node Cluster to a Shared-Replicated Configuration

Add a Shared Node Using Windows Server 2008R2 or 2012 When using Windows Server 2008R2 or 2012, a 1×1 2-Node replicated cluster using DataKeeper Volumes can be extended to a 2×1 shared and replicated 3-Node cluster by using either of the following…

Disconnecting from a Server

SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup » Disconnecting from a Server

Use this dialog to disconnect from a server. You may use this option if you no longer wish to view the server in the Administration Window. From the list of servers, select the server(s) that you wish to disconnect from and click Disconnect.

Unextending a Hierarchy

NO TOC » SIOS Protection Suite for Windows » Administration » Working With Resource Hierarchies » Unextending a Hierarchy

The Unextend Resource Hierarchy option removes a complete hierarchy, including all of its resources, from a single server. This is different than the Delete Resource Hierarchy selection which removes a hierarchy from all servers. When using Unextend Resource…

Setup of iSCSI Initiator on Windows 2012

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Setup of iSCSI Initiator on Windows 2012

Once the virtual disks/targets are created, each of the cluster servers must initiate a connection to them via Microsoft’s iSCSI Initiator. From “Administrator Tools” in “Server Manager”, start “iSCSI Initiator”. Select the “Targets” tab and…

Renaming a Job

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Renaming a Job

Select the job in the left Console Tree pane of the main DataKeeper window. You can select Rename Job from the Actions pane or right-click on the selected job and choose Rename Job from the menu that displays. Enter the new Job Name and new Job…

Awareness of Windows Filenames and Directory Names

SIOS DataKeeper for Windows Technical Documentation » FAQs » Awareness of Windows Filenames and Directory Names

Question Is SIOS DataKeeper aware of Windows filenames and directory names? Answer SIOS DataKeeper is implemented with a Windows kernel mode filter driver that sits above the physical disk driver but below the file system. As a result, the SIOS DataKeeper driver…

Connecting to a Server

SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup » Connecting to a Server

Use this dialog to connect to the server of your choice. You may enter the IP address, system NetBIOS name or the full system domain name for the server. Click Connect to select it.

Initial Synchronization of Data Across the LAN or WAN

SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations » Initial Synchronization of Data Across the LAN or WAN

When replicating large amounts of data over a WAN link, it is desirable to avoid full resynchronizations which can consume large amounts of network bandwidth and time. DataKeeper avoids almost all full resyncs by using its bitmap technology. However, the initial…

Duplicate IP Addresses Disallowed Within a Job

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » Duplicate IP Addresses Disallowed Within a Job

A DataKeeper job contains the endpoint information for all mirrors that are part of the job. This information includes the host name, IP address, and drive letter of each mirror endpoint. Within a job, an IP address cannot be duplicated on more than one node. For…

Server Login Accounts and Passwords Must Be Same on Each Server in the Cluster

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Server Login Accounts and Passwords Must Be Same on Each Server in the Cluster

The DataKeeper GUI cannot connect to the target server in a cluster if server Login Accounts and Passwords are different on each server. Error Message An Error Code 1326 will appear in the Application log (Note: The Error Code may also be a 2 with Event ID…

Error Messages Log

SIOS DataKeeper for Windows Technical Documentation » FAQs » Error Messages Log

Question Where does DataKeeper log error messages? Answer DataKeeper events are logged in the Windows Application Event Log and the Windows System Event Log. Here is a breakdown of the messages you can look for. Application Event Log: Source = ExtMirrSvc –…

DataKeeper Cluster Edition Release Notes

NO TOC » DataKeeper Cluster Edition Release Notes

SIOS DataKeeper Cluster Edition Release Notes Version 8.6.2 (Version 8 Update 6 Maintenance 2) Important!! Read This Document Before Attempting To Install Or Use This Product! This document contains last minute information that must be considered before, during…

Using Microsoft iSCSI Target With DataKeeper on Windows 2012

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012

The following topics will guide you in setting up Microsoft iSCSI Target with DataKeeper via the user interface. *NOTE: This configuration is not supported in a VMware ESX environment. …

Configuring Mirrors

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors

Creating a Mirror Creating Mirrors With Shared Volumes Safe Creation of a Shared-Storage Volume Resource Creating Mirrors With Multiple Targets Switchover and Failover with Multiple Targets

Switchover and Failover with Multiple Targets

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Switchover and Failover with Multiple Targets

In a multiple target configuration, it is important to understand how DataKeeper mirrors will work in the following scenarios: Manual switchover to a target server Source server failure followed by a manual switchover to a target server Example: In the…

Access to Designated Volume Denied

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Access to Designated Volume Denied

If access to the designated volume is denied, then check whether you are attempting to create the mirror while other applications are accessing the volume. During Mirror Creation, the volumes must be locked on the target system for exclusive access by the SIOS…

Installing and Using DataKeeper Cluster Edition on Windows Server 2008 R2 / 2012 Core Platforms

NO TOC » SIOS Protection Suite for Windows » Clustering » Installing and Using DataKeeper Cluster Edition on Windows Server 2008 R2 / 2012 Core Platforms

Prepare the servers. Install Windows Server 2008 R2/2012 Core on two servers, configure IP, join a domain, configure firewall for remote administration, configure the server for remote access and install the Failover Cluster feature. Server Core Installation…

CREATEMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CREATEMIRROR

EMCMD CREATEMIRROR [options] This command creates a mirror between two machines, using the same drive letter on each. The parameters are: This is the IP address of the source system (see Note below). This is the drive letter…

Volume Considerations

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Volume Considerations

SIOS DataKeeper primary and secondary systems have three types of volumes: system, non-mirrored and mirrored. During mirroring operations, system and non-mirrored volumes are not affected and the user has full access to all applications and data on these…

SIOS DataKeeper for Windows Quick Start Guide

SIOS DataKeeper for Windows Quick Start Guide

This topic provides step-by-step instructions for installing and configuring DataKeeper Standard Edition. The series of steps includes links into the documentation that describe each step in detail. Prerequisites and Installation Read the SIOS Protection Suite for…

CHANGEMIRRORTYPE

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CHANGEMIRRORTYPE

EMCMD CHANGEMIRRORTYPE This command is used to change the mirror type of a mirror that is part of a DataKeeper job. Refer to the examples below. See Synchronous and Asynchronous Mirroring for information about the supported DataKeeper mirror types. …

Compression

SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations » Compression

DataKeeper allows the user to choose the compression level associated with each mirror. Enabling compression can result in improved replication performance, especially across slower networks. A compression level setting of 3-5 represents a good balance between CPU…

GETVOLUMEDRVSTATE

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETVOLUMEDRVSTATE

EMCMD GETVOLUMEDRVSTATE This command retrieves the current state of the SIOS DataKeeper device driver. The parameters are: This can be either the source or the target systems. The drive letter of the volume you want to get the…

Performance Monitor Counters

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Performance Monitor Counters

SIOS DataKeeper provides counters that extend Performance Monitor with statistics about the status of mirroring on volumes. The counters are installed during the full installation of SIOS DataKeeper software. To access the counters, do the following: On a…

Resynchronization

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Resynchronization

SIOS DataKeeper Resynchronization SIOS DataKeeper performs resynchronization through the use of a bitmap file (intent log). It allocates memory that is used to keep track of “dirty” or “clean” blocks. When a full resync begins, SIOS DataKeeper…

Secondary Server Failures

SIOS DataKeeper for Windows Technical Documentation » Administration » Secondary Server Failures

In the event there is a failure affecting the secondary (target) system, the affected mirror is marked Paused. It is necessary to correct the condition that caused the secondary to fail and then resync the volumes. There are no write attempts made to the target after…

New-DataKeeperMirror

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » New-DataKeeperMirror

This cmdlet is used to create a new DataKeeper mirror. Mirrors created with this cmdlet will be visible in the DataKeeper SnapIn (Reports > Server Overview). If a job exists that includes information that matches this mirror (systems, IP Addresses, Volumes, and Sync…

Working With Mirrors

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors

Managing Mirrors Pause and Unlock Continue and Lock Partial Resync Break Resync Deleting a Mirror Replacing a Target DataKeeper Volume Resize Mirror Properties Changing the Compression Level of an Existing Mirror

BREAKMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » BREAKMIRROR

EMCMD BREAKMIRROR [] This command forces the mirror into a Broken state. Breaking the mirror will cause a full resync to occur when the mirror is continued or resynced. The parameters are: This is the source system of the mirror to break. Running…

Creating Mirrors With Multiple Targets

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Creating Mirrors With Multiple Targets

SIOS DataKeeper provides the ability to replicate data from a single source volume to one or more target volumes. In addition, DataKeeper also allows you to switch over control and make any of the target volumes become the source. Assuming you have already created a…

DataKeeper Target Snapshot

SIOS DataKeeper for Windows Technical Documentation » User Guide » DataKeeper Target Snapshot

Overview DataKeeper’s target snapshot feature, integrated with both DataKeeper and DataKeeper Cluster Edition, is the process of creating point in time copies of replicated volumes allowing access to data on a standby cluster node without interrupting data…

Pause and Unlock

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Pause and Unlock

This command pauses the mirror and unlocks the volume on the target system. You may wish to unlock the target volume in order to make a backup of the volume. Warning: Any writes to the target volume while it is unlocked will be lost when the mirror is…

GETMIRRORTYPE

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETMIRRORTYPE

EMCMD GETMIRRORTYPE This command provides a numeric output of the type of mirror. The parameters are: This can be either the source or the target systems. The driver letter of the volume you want information on. Output…

Continue and Lock

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Continue and Lock

This action locks the volume on the target system and then resumes the mirroring process. While the mirror is paused, writes on the source system are recorded in the SIOS DataKeeper Intent Log. When the Continue and Lock operation occurs, these changed blocks –…

Managing Mirrors

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Managing Mirrors

From the Actions pane, you can select a job and manage all the mirrors in a job, or you can perform an action on a single mirror in a job. After selecting a job, you can: Pause and Unlock All Mirrors Continue and Lock All Mirrors Break All…

N-Shared-Disk Replicated to One

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » N-Shared-Disk Replicated to One

This configuration allows you to replicate the shared volume(s) of the primary site to a remote system across the network. This configuration is ideal for providing local failover within the Primary Site and disaster recovery protection should the entire Primary…

ISBREAKUSERREQUESTED

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » ISBREAKUSERREQUESTED

EMCMD ISBREAKUSERREQUESTED This command checks whether a broken mirror is a result of a user request. The parameters are: This can be either the source or the target system. The drive letter of the volume that you want to check.…

Getting Started

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started

Choose Your Configuration DataKeeper can be utilized in a number of different configurations to facilitate a number of different functions including: Provide a second physical copy of your data Extend an existing WSFC cluster to a remote DR site Review the…

Read and Write Operations

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Read and Write Operations

After the volume mirror is created and the two drives on the primary and secondary servers are synchronized, the following events occur: The system locks out all user access to the target volume; reads and writes are not allowed to the target volume. The source…

Break

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Break

Breaking a mirror is similar to the Pause and Unlock function. It suspends mirror operation and unlocks the target volume for read/write access. The difference is that the Break operation marks all bits in the DataKeeper Intent Log as dirty, which forces a full…

DELETEMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » DELETEMIRROR

EMCMD DELETEMIRROR [] This command deletes the mirror from both the source and the target if is a source. If is a target, it will delete the target side of the mirror only if the source system is down. The parameters are: This can be either the…

PAUSEMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » PAUSEMIRROR

EMCMD PAUSEMIRROR [] This command forces the mirror into a Paused state. The parameters are: This is the source system of the mirror to pause. Running the PAUSEMIRROR command on the target has no effect. The drive letter of the…

GETMIRRORVOLINFO

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETMIRRORVOLINFO

EMCMD GETMIRRORVOLINFO This command provides a very terse output of the state of mirror. The command GETMIRRORVOLINFO can return multiple lines of output (one per target). It provides essentially the same information as the GETVOLUMEINFO command does. The…

Using EMCMD with SIOS DataKeeper

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper

The EMCMD utility that ships with SIOS DataKeeper provides users with a command line method to manipulate the mirror. Because these scripts run in situations where the “normal” validation rules may not apply, EMCMD does not perform the same kinds of sanity…

Using SIOS DataKeeper Standard Edition To Provide Disaster Recovery For Hyper-V Virtual Machines

SIOS DataKeeper for Windows Technical Documentation » User Guide » Using SIOS DataKeeper Standard Edition To Provide Disaster Recovery For Hyper-V Virtual Machines

Considerations When preparing a Hyper-V environment that spans subnets, subnetting may need to be taken into consideration for any applications that are running inside the virtual machine. Some applications “hard code” IP addresses into their…

GETCOMPLETEVOLUMELIST

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETCOMPLETEVOLUMELIST

EMCMD GETCOMPLETEVOLUMELIST This command displays information on all volumes eligible to be mirrored or already in a mirror. Sample output: Volume 1 information: Volume Root = F: Volume Label = New Volume Volume File System…

Stop Replication Between Source and Target

SIOS DataKeeper for Windows Technical Documentation » FAQs » Stop Replication Between Source and Target

Question How do I stop the replication between the Source and Target volumes? Answer Replication occurs at the driver level and can only be stopped or interrupted by sending a command from the DataKeeper GUI or the DataKeeper command line (EMCMD) to the DataKeeper…

Troubleshooting

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting

The topics in this section contain important information about known issues and restrictions offering possible workarounds and/or solutions. ________________________________________________________________________________________________________________ Known Issues…

Upgrading SIOS DataKeeper Cluster Edition

NO TOC » DataKeeper Cluster Edition Installation Guide » Upgrading SIOS DataKeeper Cluster Edition

Upgrading DataKeeper Cluster Edition from previous versions of DataKeeper Cluster Edition is very straightforward. Simply run the installation process outlined below on all systems. The upgrade process stops the DataKeeper Service, copies the new files to the…

RESYNCMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » RESYNCMIRROR

EMCMD RESYNCMIRROR [] This command forces the mirror to be fully resynced. The parameters are: This is the source system name. This is the drive letter of the mirror that should be resynced. This is the IP…

Resync

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Resync

Use this command to re-establish a broken mirror. A full resync will be performed. Select the job that contains the mirror you want to resync. Right-click on the job selection and choose Resync All Mirrors or select Resync All Mirrors from the Actions task…

FAQs

SIOS DataKeeper for Windows Technical Documentation » FAQs

Refer to this section for answers to the most frequently asked questions about SIOS DataKeeper. ______________________________________________________________________________________________________________ Awareness of Windows Filenames and Directory Names AWS…

DELETELOCALMIRRORONLY

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » DELETELOCALMIRRORONLY

EMCMD DELETELOCALMIRRORONLY [] This command deletes the mirror only on the it is issued on. It handles the case when a mirror ends up with a target and no source or source and no target. The parameters are: This can be either the source or the…

GETSOURCEMIRROREDVOLUMES

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETSOURCEMIRROREDVOLUMES

EMCMD GETSOURCEMIRROREDVOLUMES This command displays information about the volumes on the system that are currently the source in a mirror. Sample output: Status = 0 Source Volume = F: Source Label = New Volume Source #Targs = 2 Target 0 Target…

User Interface

SIOS DataKeeper for Windows Technical Documentation » Introduction » User Interface

SIOS DataKeeper User Interface The SIOS DataKeeper User Interface uses a standard MMC snap-in interface. The left pane displays the Console Tree view. This includes the Jobs and Reports. Currently, there are two reports available – Job Overview and…

Remove-DataKeeperMirror

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » Remove-DataKeeperMirror

This cmdlet will remove a DataKeeper mirror. It will attempt to remove the mirror from all nodes for this mirror. This command will not remove the mirror from any down or network inaccessible node. Parameters Parameter Type Required Position…

Understanding Replication

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication

How SIOS DataKeeper Works At the highest level, DataKeeper provides the ability to mirror a volume on one system (source) to a different volume on another system (target) across any network. When the mirror is created, all data on the source volume is initially…

User Interface

NO TOC » DataKeeper Cluster Edition Technical Documentation » SIOS DataKeeper Cluster Edition Introduction » User Interface

SIOS DataKeeper User Interface The SIOS DataKeeper User Interface uses a standard MMC snap-in interface. The left pane displays the Console Tree view. This includes the Jobs and Reports. Currently, there are two reports available – Job Overview and Server…

CHKDSK Considerations

SIOS DataKeeper for Windows Technical Documentation » Administration » CHKDSK Considerations

If you must run CHKDSK on a volume that is being mirrored by SIOS DataKeeper, it is recommended that you first pause the mirror. After running CHKDSK, continue the mirror. A partial resync occurs (updating those writes generated by the CHKDSK) and mirroring will…

GETVOLUMEINFO

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETVOLUMEINFO

EMCMD GETVOLUMEINFO This command returns information about the selected volume. The parameters are: This can be either the source or the target systems. The drive letter of the volume you want information on. A…

CHANGEMIRRORENDPOINTS

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CHANGEMIRRORENDPOINTS

EMCMD CHANGEMIRRORENDPOINTS This command is used to change the replication IP addresses within systems that are already part of a DataKeeper job for the given volume. Note: This command supports changing the endpoints of a mirrored volume that is configured on 3…

CONTINUEMIRROR

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CONTINUEMIRROR

EMCMD CONTINUEMIRROR [] This command forces a paused or broken mirror to resume mirroring. On successful completion of the resync (full or partial), the mirror state is changed to Mirroring. This command will not automatically relock the target volume if it is…

Known Issues and Workarounds

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds

Included below are known issues open against DataKeeper as well as possible workarounds and/or solutions. __________________________________________________________________________________________________________________ Access to Designated Volume Denied Failed to…

Registry Entries

SIOS DataKeeper for Windows Technical Documentation » Administration » Registry Entries

The following registry entries are associated with the SIOS DataKeeper service or driver and can be viewed using Regedt32. The first section contains entries that may be modified; the second section contains entries that are for viewing only and should not be…

Synchronous and Asynchronous Mirroring

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Synchronous and Asynchronous Mirroring

SIOS DataKeeper employs both asynchronous and synchronous mirroring schemes. Understanding the advantages and disadvantages between synchronous and asynchronous mirroring is essential to the correct operation of SIOS DataKeeper. Synchronous Mirroring With synchronous…

DataKeeper Notification Icon

SIOS DataKeeper for Windows Technical Documentation » User Guide » DataKeeper Notification Icon

The DataKeeper Notification Icon is an application that will show a summary of your DataKeeper mirrors in the Windows Notification Tray. The icon displayed indicates what conditions have been detected, with the following priority. Error: An error condition, such as…

PREPARETOBECOMETARGET

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » PREPARETOBECOMETARGET

EMCMD PREPARETOBECOMETARGET This command should only be used to recover from a Split-Brain condition. It should be run on the system where the mirror is to become a target and is only valid on a mirror source. This command causes the mirror to be deleted and the…

Working With Jobs

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs

Jobs Renaming a Job Deleting a Job Reassigning a Job Switching Over a Mirror

Using Disk Management

SIOS DataKeeper for Windows Technical Documentation » Administration » Using Disk Management

When using the Windows Disk Management utility to access SIOS DataKeeper volumes, please note the following: Using Disk Management to delete partitions that are being mirrored is not supported. Deleting a partition that is part of a SIOS DataKeeper mirror will yield…

Network Disconnect

SIOS DataKeeper for Windows Technical Documentation » FAQs » Network Disconnect

Scenario #1 In a 2-Node, non-clustering configuration (1×1) replicating a 100TB volume between Source server and Target server over a WAN connection, the network goes down for twenty minutes. Question In this scenario, what would happen to the Mirror State with…

Managing Shared Volumes

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes » Managing Shared Volumes

Once your mirrors have been created, DataKeeper allows you to manage your shared volumes. By choosing Manage Shared Volumes from the DataKeeper GUI, you can add another system, which is sharing a mirrored volume, to a job. It also allows you to remove a shared system…

New-DataKeeperJob

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » New-DataKeeperJob

This cmdlet is used to create a DataKeeper job consisting of two nodes. Jobs created using this cmdlet will be added to the DataKeeper SnapIn the next time it is loaded. Parameters Parameter Type Required Position Notes JobName …

CLEARSWITCHOVER

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CLEARSWITCHOVER

EMCMD CLEARSWITCHOVER This command should be run on a target system where a mirror has been previously deleted with the DELETELOCALMIRRORONLY command and now needs to be re-established. This command clears the SIOS DataKeeper switchover flag that is set for a volume…

Using DataKeeper Cluster Edition to Enable Multi-Site Hyper-V Clusters

NO TOC » SIOS Protection Suite for Windows » Clustering » Using DataKeeper Cluster Edition to Enable Multi-Site Hyper-V Clusters

Prerequisite Familiarity with Microsoft Windows Server, Microsoft Windows Failover Cluster Server Management and Hyper-V Virtual Management procedures and commands is highly recommended. Note: DataKeeper ClusterCluster Edition does not support Cluster Shared Volumes;…

One-to-One

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » One-to-One

This is a simple one source, one target configuration, mirroring Volume X across the network. In addition to providing a second physical copy of the data, DataKeeper also provides the ability to switch over the mirror which allows the data to become active on the…

DataKeeper Volume Resize

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » DataKeeper Volume Resize

DataKeeper allows users to extend and shrink their DataKeeper volumes dynamically while retaining mirror settings. Once the resize is complete, a partial resync will be performed. Note: This resize procedure should be performed on only one volume at a time. !WARNING …

Components

NO TOC » DataKeeper Cluster Edition Technical Documentation » SIOS DataKeeper Cluster Edition Introduction » Components

DataKeeper Components SIOS DataKeeper for Windows is comprised of the following components: DataKeeper Driver (ExtMirr.sys) – The DataKeeper Driver is a kernel mode driver and is responsible for all mirroring activity between the mirror…

DataKeeper Components

SIOS DataKeeper for Windows Technical Documentation » Introduction » DataKeeper Components

SIOS DataKeeper for Windows is comprised of the following components: DataKeeper Driver (ExtMirr.sys) – The DataKeeper Driver is a kernel mode driver and is responsible for all mirroring activity between the mirror endpoints. DataKeeper Service…

SIOS DataKeeper Intent Log

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » SIOS DataKeeper Intent Log

SIOS DataKeeper uses an intent log (also referred to as a bitmap file) to track changes made to the source, or to target volume during times that the target is unlocked. This log is a persistent record of write requests which have not yet been committed to both…

Get-DataKeeperVolumeInfo

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » Get-DataKeeperVolumeInfo

This cmdlet is used to fetch information about a volume used in DataKeeper. It reports DataKeeper volume information. Parameters Parameter Type Required Position Notes Node String Yes 0 Use the Node parameter…

DKHEALTHCHECK

SIOS DataKeeper for Windows Technical Documentation » Administration » DKHEALTHCHECK

DKHealthCheck.exe, found in the \DKTools directory, is a tool that can provide basic mirror status and problem detection of mirror issues. SIOS Support may request that you run this tool as part of the Support process. Note: DKHEALTHCHECK output is captured by…

Creating Mirrors With Shared Volumes

SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Creating Mirrors With Shared Volumes

In order to properly configure DataKeeper in a shared volume configuration, use the DataKeeper GUI to connect to all systems where the shared volumes are configured. When connected, the DataKeeper GUI uses hardware signatures to automatically detect which volumes are…

One-to-Many (Multiple Targets)

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » One-to-Many (Multiple Targets)

This configuration involves one primary (source) system replicating one (or more) volume(s) to two different target systems across the network. This is referred to as a multiple target configuration. Note that there are two mirrors that are completely independent…

GETTARGETMIRROREDVOLUMES

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETTARGETMIRROREDVOLUMES

EMCMD GETTARGETMIRROREDVOLUMES This command displays information about the volumes on the system that are currently the target in a mirror. Sample output: ** Calling GetTargetMirroredVolumes ** Returned 1 Target Volumes Target Volume 1 information: Volume Root …

Add-DataKeeperJobPair

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » Add-DataKeeperJobPair

This cmdlet will add a node pair to an existing DataKeeper Job. It is used to expand the nodes and volumes contained within an existing job. For example, if a job exists for a volume between nodes A and B, and you want to add node C, run AddDataKeeperJobPair…

High-Speed Storage Best Practices

SIOS DataKeeper for Windows Technical Documentation » Configuration » High-Speed Storage Best Practices

Configure Bitmaps If the DataKeeper default bitmap location (%ExtMirrBase%\Bitmaps) is not located on high-speed storage, you should move the bitmaps to a high-speed storage device in order to eliminate I/O bottlenecks with bitmap access. To do this, allocate a small…

Mirroring with Dynamic Disks

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Mirroring with Dynamic Disks

When changing from a Basic Disk to a Dynamic Disk, the underlying volume GUID may be changed by the OS upon reboot. This will cause a DataKeeper mirror to break. Suggested Action When mirroring with dynamic disks, your dynamic volumes should be created and a reboot…

Bandwidth Throttle

SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations » Bandwidth Throttle

DataKeeper attempts to utilize all of the available network bandwidth. If DataKeeper is sharing the available bandwidth with other applications, you may wish to limit the amount of bandwidth DataKeeper is allowed to use. DataKeeper includes a feature called Bandwidth…

Split-Brain FAQs

SIOS DataKeeper for Windows Technical Documentation » FAQs » Split-Brain FAQs

Scenario I am using DataKeeper in a non-cluster environment. I am mirroring from Server1 at one site to Server2 at a second site. Communication is broken due to site-to-site VPN, and I need to fail over from Server1 to Server2. I cannot access Server1 from anywhere.…

Network Bandwidth

SIOS DataKeeper for Windows Technical Documentation » Configuration » Network Bandwidth

Because DataKeeper can replicate data across any available network, special consideration must be given to the question, “Is there sufficient bandwidth to successfully replicate the volume and keep the mirror in the mirroring state as the source volume is updated…

MaxResyncPasses Value

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » MaxResyncPasses Value

If, during a volume resynchronization, the number of passes made through the intent log exceeds the MaxResyncPasses registry value (200 by default), SIOS DataKeeper logs a message to the Event Log indicating that the resync process is taking too many passes and…

CHKDSK

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » CHKDSK

Description If you must run CHKDSK on a volume that is being replicated by SIOS DataKeeper, it is recommended that you PAUSE the mirror before initiating the CHKDSK. After running CHKDSK, CONTINUE the mirror. A partial resync occurs (updating those writes generated…

Setting Up SIOS DataKeeper

NO TOC » SIOS Protection Suite for Windows » DataKeeper » Setting Up SIOS DataKeeper

Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree display and select Connect to…

Setting Up SIOS DataKeeper

SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup » Setting Up SIOS DataKeeper

Setting Up SIOS DataKeeper Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree…

Setup

SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup

Setting Up SIOS DataKeeper Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree…

UPDATEVOLUMEINFO

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » UPDATEVOLUMEINFO

EMCMD UPDATEVOLUMEINFO This command causes the SIOS DataKeeper service to query the driver for the correct mirror state. This command is useful if the DataKeeper GUI displays information that appears to be incorrect or not up-to-date. Note: The SIOS DataKeeper…

DataKeeper Service Log On ID and Password Selection

SIOS DataKeeper for Windows Technical Documentation » Introduction » DataKeeper Components » DataKeeper Service Log On ID and Password Selection

During a new DataKeeper installation setup, the user will be prompted for a DataKeeper Service Log On ID and Password. The DataKeeper Service uses authenticated connections to perform volume switchovers and make mirror role changes across multiple servers. The Log On…

DataKeeper Service Log On ID and Password Selection

SIOS DataKeeper for Windows Technical Documentation » Configuration » DataKeeper Service Log On ID and Password Selection

During a new DataKeeper installation setup, the user will be prompted for a DataKeeper Service Log On ID and Password. The DataKeeper Service uses authenticated connections to perform volume switchovers and make mirror role changes across multiple servers. The Log On…

Specifying Network Cards for Mirroring

SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Specifying Network Cards for Mirroring

SIOS DataKeeper allows the administrator to specify which IP addresses should be used as mirror end-points. This allows the replicated data to be transmitted across a specific network which permits the user to segment mirrored traffic away from the client network if…

Extensive Write Considerations

SIOS DataKeeper for Windows Technical Documentation » Administration » Extensive Write Considerations

SIOS DataKeeper allows users to access the source during the creation and resync process. Extensive writes during the create or resync process increase the amount of time required to complete the operation. The user can also increase the MaxResyncPasses registry…

Using DKPwrShell with SIOS DataKeeper

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper

SIOS DataKeeper includes a powershell module (DKPwrShell) that allows a user to manipulate a DataKeeper mirror using Microsoft Powershell. Commands are passed to a SIOS DataKeeper service and will fail if the service is not running. With Microsoft Powershell v3 or…

Network Adapter Settings

SIOS DataKeeper for Windows Technical Documentation » Configuration » Network Adapter Settings

DataKeeper requires that “File and Printer Sharing for Microsoft Networks” be enabled on the network interfaces to make a NAMED PIPE connection and be able to run DataKeeper’s command line tool (EMCMD). To test if you can make a Named Pipe connection,…

READREGISTRY

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » READREGISTRY

EMCMD READREGISTRY This command tells the SIOS DataKeeper driver to re-read its registry settings. The parameters are: This can be either the source system or the target system. The drive letter of the mirror for which you want…

Licensing

NO TOC » SIOS Protection Suite for Windows » SIOS Protection Suite Installation Guide » Installing SIOS Protection Suite » Licensing

Obtaining and Installing the License DataKeeper Cluster Edition requires a unique license for each server. The license is a run-time license which means that you can install it without the license, but the license must be installed before you can successfully start…

Resize or Grow Mirrored Volumes

SIOS DataKeeper for Windows Technical Documentation » FAQs » Resize or Grow Mirrored Volumes

Question Can you resize or grow mirrored volumes? Answer Yes, beginning with Version 7.4, users can extend and shrink their DataKeeper volumes dynamically while retaining mirror settings. See DataKeeper Volume Resize for more information.

N-Shared-Disk Replicated to Multiple N-Shared-Disk Targets

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » N-Shared-Disk Replicated to Multiple N-Shared-Disk Targets

This is a complex configuration which combines the aspects of replicating a shared storage environment to multiple shared targets. Example: USE CASE Users who wish to provide the same level of availability in their DR site will deploy this…

Sector Size

SIOS DataKeeper for Windows Technical Documentation » Configuration » Sector Size

Beginning with DataKeeper Version 7.2.1, disks with sector size not equal to 512 bytes are supported. However, DataKeeper requires that the mirror source volume be configured on disk(s) whose sector size is the same as the disk(s) where the mirror target is configured.…

Jobs

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Jobs

For ease of use and configuration, SIOS DataKeeper does much of its management of mirrors through an entity called a job. A job is a logical grouping of related mirrors and servers. This feature allows you to create a job for complex repetitive tasks and run them…

N-Shared-Disk Replicated to N-Shared-Disk

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » N-Shared-Disk Replicated to N-Shared-Disk

This configuration replicates data between sites where each site utilizes shared storage. Note that the number of systems in the Primary Site does not have to equal the number of systems in the Remote Site. Also note that only the Source Server has access to the…

Configuration

SIOS DataKeeper for Windows Technical Documentation » Configuration

Requirements/Considerations The topics in this section identify several prerequisites to be aware of before implementing your DataKeeper…

Unable to Determine Previous Install Path

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Unable to Determine Previous Install Path

Installation – Fatal Error: Unable to Determine Previous Install Path Error/Message Fatal Error: Unable to determine previous install path. DataKeeper cannot be uninstalled or reinstalled. Description When performing a “Repair” or…

SETSNAPSHOTLOCATION

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » SETSNAPSHOTLOCATION

EMCMD SETSNAPSHOTLOCATION “” This command sets the snapshot location (directory path) for the given volume on the given system. The directory must be valid on the system in question, must be a local drive/path, must be an absolute path and cannot be left…

SWITCHOVERVOLUME

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » SWITCHOVERVOLUME

EMCMD SWITCHOVERVOLUME [-f] This command attempts to make the given system become the source for the requested volume. This command is for internal use only. The parameters are: This is the IP address of the system to become source. Note: Use the…

Introduction

SIOS DataKeeper for Windows Technical Documentation » Introduction

SIOS DataKeeper Overview SIOS DataKeeper is a highly optimized host-based replication solution which ensures your data is replicated as quickly and as efficiently as possible from your source server across the network to one or more target servers. Features Some…

SIOS DataKeeper Cluster Edition Introduction

NO TOC » DataKeeper Cluster Edition Technical Documentation » SIOS DataKeeper Cluster Edition Introduction

SIOS DataKeeper Overview DataKeeper with High Availability – Cluster Edition Overview SIOS DataKeeper is a highly optimized host-based replication solution which ensures your data is replicated as quickly and as efficiently as possible from your source server…

GETRESYNCSTATUS

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETRESYNCSTATUS

EMCMD GETRESYNCSTATUS This command returns information indicating the overall status of a resync operation. The parameters are: This can be either the source or the target systems. The drive letter of the volume you want to set…

Using the -proxy option with EMCMD

NO TOC » DataKeeper Cluster Edition Technical Documentation » Using the -proxy option with EMCMD

All EMCMD requests can be routed through a “proxy” DataKeeper service. To do this, append the options -proxy - to the end of the EMCMD command line. The should be given using the same format as the option. EMCMD will open a connection to the …

User Guide

SIOS DataKeeper for Windows Technical Documentation » User Guide

The topics in this section are designed to be a reference for you as you get started using SIOS DataKeeper, helping you identify the type of configuration you are interested in implementing and providing detailed instructions for effectively using your SIOS DataKeeper…

Many-to-One

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » Many-to-One

This configuration involves multiple source servers replicating one (or more) volumes to the same target system. In this configuration, each volume being replicated to the target server must have a unique drive letter. Note: This is actually two One-to-One…

DataKeeper User Guide

NO TOC » SIOS Protection Suite for Windows » DataKeeper » DataKeeper User Guide

The topics in this section are designed to be a reference for you as you get started using SIOS DataKeeper, helping you identify the type of configuration you are interested in implementing and providing detailed instructions for effectively using your SIOS DataKeeper…

DataKeeper Event Log Notification

SIOS DataKeeper for Windows Technical Documentation » Administration » DataKeeper Event Log Notification

The Event Log notification is a mechanism by which one or more users may receive email notices when certain events occur. The Windows Event Log can be set up to provide notifications of certain DataKeeper events that get logged. *Note: This option is only available…

ISPOTENTIALMIRRORVOL

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » ISPOTENTIALMIRRORVOL

EMCMD ISPOTENTIALMIRRORVOL This command checks to determine if a volume is a candidate for mirroring. The command may only be run on the local system. The parameters are: This should be the local system. The drive letter of the…

Partial Resync

SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Partial Resync

A partial resync is the resynchronization of only the necessary data to establish the new end points and is usually much quicker than a full resync.

WAN Considerations

SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations

Replicating data across the network to a remote server located miles away from the source server is the most common use of DataKeeper. Typically, this configuration relies on a WAN of some sort to provide the underlying network that DataKeeper uses to replicate the…

Non-mirrored Volume Resource

NO TOC » SIOS Protection Suite for Windows » Clustering » Non-mirrored Volume Resource

A non-mirrored volume resource is a DataKeeper resource where no data is replicated to any node in the cluster. This resource type should only be used where the data is temporary and/or non-critical such as MS SQL Server tempdb space. In this case, when MS SQL restarts…

Firewall Configurations

SIOS DataKeeper for Windows Technical Documentation » Configuration » Firewall Configurations

SIOS DataKeeper cannot function properly if the firewall settings for the source and target machines are not configured correctly. This means you will need to configure a rule for inbound and outbound connections on each server running SIOS DataKeeper as well as any…

DKSUPPORT

SIOS DataKeeper for Windows Technical Documentation » Administration » DKSUPPORT

DKSUPPORT .cmd, found in the \SUPPORT directory, is used to collect important configuration information and event log files and put them in a zip file. SIOS Support Engineers will commonly request this zip file as part of the support process. To run this utility,…

Uninstalling SIOS DataKeeper Cluster Edition

NO TOC » DataKeeper Cluster Edition Installation Guide » Uninstalling SIOS DataKeeper Cluster Edition

Before Removing DataKeeper If planning to uninstall DataKeeper and reinstall a previous version, all jobs/mirrors must be deleted on each node prior to uninstalling. These will need to be recreated once software is reinstalled. Uninstall DataKeeper Cluster…

Remove-DataKeeperJob

SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper » Remove-DataKeeperJob

This cmdlet will remove a DataKeeper job of a given ID. It will remove this job from all systems contained within the job. Parameters Parameter Type Required Position Notes JobID String Yes 0 The unique job…

Windows Server 2012 NIC Teaming Issue

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » Windows Server 2012 NIC Teaming Issue

If you use the NIC Teaming feature of Windows Server 2012, Windows 2012 will report only one adapter MAC address for the license. If you have many underlying adapters, the MAC address will arbitrarily change and Windows may pick one of the adapters that may no longer…

Primary Server Shutdown

SIOS DataKeeper for Windows Technical Documentation » Administration » Primary Server Shutdown

On a graceful shutdown of the source server, all pending writes to the target are completed. This ensures that all data is present on the target system. On an unexpected source server failure, the Intent Log feature eliminates the need to do a full resync after the…

Windows Server 2012 iSCSI Target Role Does Not Support Dynamic Disks

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » Windows Server 2012 iSCSI Target Role Does Not Support Dynamic Disks

Description The iSCSI Target Role only supports DataKeeper Volumes that are mirrors of Simple Volumes placed on Basic Disks. If any of your mirrors are using volumes such as Striped or Spanned volumes on a Dynamic Disk on either the source or target system, then you…

CLEARSNAPSHOTLOCATION

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CLEARSNAPSHOTLOCATION

EMCMD CLEARSNAPSHOTLOCATION This command clears the snapshot location (directory path) for the given volume on the given system. Once this command executes successfully, snapshots will be disabled for the given volume. The parameters are: This is…

Intensive I-O with Synchronous Replication

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » Intensive I-O with Synchronous Replication

Description Due to the nature of synchronous replication (blocking volume writes while waiting for a response from the target system), you may experience sluggish behavior with any applications that are writing to the mirrored volume. The frequency of these events…

Resource Tag Name Restrictions

NO TOC » Resource Tag Name Restrictions

Tag Name Length All tags within DataKeeper may not exceed the 256 character limit. Valid “Special” Characters - _ . / However, the first character in a tag should not contain “.” or “/”. Invalid…

AWS Issues and Workarounds

SIOS DataKeeper for Windows Technical Documentation » FAQs » AWS Issues and Workarounds

Question What is the best practice for shutting down clustered VMs in AWS? Answer If shutting down the primary source node, all cluster roles depending on a SIOS DataKeeper Volume Resource should be placed in the Offline state. Also make sure all mirrors are in the…

Disk-to-Disk

SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » Disk-to-Disk

This is a simple one server, two disks configuration, mirroring Volume X on Server A to Volume Y on Server A. The volumes that are used for Disk-to-Disk replication can’t also be configured to replicate to another system. *Disk to Disk does not support mirrors…

GETBLOCKTARGET

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETBLOCKTARGET

EMCMD GETBLOCKTARGET This command provides the current state of the block target flag, either TRUE or FALSE. The block target flag if set to TRUE will prevent that system from ever becoming a target for the selected volume. This command is for internal use…

SETBLOCKTARGET

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » SETBLOCKTARGET

EMCMD SETBLOCKTARGET This command sets the state of the block target flag to TRUE. The block target flag when set to TRUE will prevent that system from ever becoming a target for the selected volume. This command is for internal use only. No output is produced when…

CLEARBLOCKTARGET

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CLEARBLOCKTARGET

EMCMD CLEARBLOCKTARGET This command sets the state of the block target flag to FLASE. The block target flag when set to FALSE will allow that system to become a target for the selected volume. This command is for internal use only. No output is produced when running…

CHANGEMIRRORENDPOINTS

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » CHANGEMIRRORENDPOINTS

Description: This command, which is used to move a DataKeeper protected volume to another network location, only supports changing the endpoints of a mirrored volume that is configured on 3 nodes or fewer. Workaround: For configurations greater than three nodes, the…

LOCKVOLUME

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » LOCKVOLUME

EMCMD LOCKVOLUME This command forces an exclusive lock on the volume specified. This call will fail if a process owns open handles into the volume. The parameters are: This can be either the source or the target systems. The…

Using Volume Shadow Copy

SIOS DataKeeper for Windows Technical Documentation » FAQs » Using Volume Shadow Copy

Question Can Volume Shadow Copy (VSS) be Used with DataKeeper Volumes? Answer VSS Shadow Copy can be enabled for DataKeeper volumes. However, the following guidelines apply: VSS snapshot images must not be stored on a DataKeeper volume. Storing VSS snapshots on…

TAKESNAPSHOT

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » TAKESNAPSHOT

EMCMD TAKESNAPSHOT […] This command, run on the target system, will notify DataKeeper to establish a snapshot of the given volume(s) on the given system. If no snapshot location has been configured, the command will fail. The parameters are: …

Bitlocker Does Not Support DataKeeper

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » Bitlocker Does Not Support DataKeeper

According to Microsoft, Bitlocker is not supported to work with Software RAID configurations. Since DataKeeper is essentially a software RAID 1, Microsoft does not support Bitlocker working with DataKeeper. Note: EFS (Encrypting File System) and TDE (Transparent Disk…

DataKeeper Cluster Edition Installation Guide

NO TOC » DataKeeper Cluster Edition Installation Guide

The DataKeeper Cluster Edition Installation Guide contains information on how to install and license your Cluster Edition software. Once you have completed the steps in this guide, you will be ready to configure your Cluster resources. The DataKeeper Cluster Edition…

GETJOBINFOFORVOL

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETJOBINFOFORVOL

EMCMD GETJOBINFOFORVOL [|] This command displays job information related to a specific volume on a specific system.

SETCONFIGURATION

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » SETCONFIGURATION

EMCMD SETCONFIGURATION This command sets the net alert settings (also referred to as “volume attributes”) for the volume. The parameters are: This can be either the source or the target system. The drive letter of the…

GETJOBINFO

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETJOBINFO

EMCMD GETJOBINFO [] This command displays job information for a specific JobId or all defined jobs.

Volumes Unavailable for Mirroring

SIOS DataKeeper for Windows Technical Documentation » FAQs » Volumes Unavailable for Mirroring

Question Why are some of my volumes not available for mirroring? Answer The SIOS DataKeeper service filters out the following types of disk partitions: Windows system volume Volume(s) that contain the Windows pagefile Non-NTFS formatted volumes (e.g. FAT,…

Localized Language Supplement

NO TOC » DataKeeper Cluster Edition Installation Guide » Installation » Localized Language Supplement

For information regarding the Localized Language Supplement, please refer to the topic Installing LifeKeeper for Windows Localized Language Supplement in the SIOS Protection Suite Documentation.

UNLOCKVOLUME

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » UNLOCKVOLUME

EMCMD UNLOCKVOLUME This command forces the volume specified to unlock. The parameters are: This can be either the source or the target systems. The drive letter of the volume you want to unlock.

DROPSNAPSHOT

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » DROPSNAPSHOT

EMCMD DROPSNAPSHOT [ …] This command will notify DataKeeper to lock the volume and clean up the snapshot files that it created. The parameters are: This is the IP address of the system containing the snapshot. This is the…

Windows Server 2012 Specific Issues

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues

For issues related to Windows Server 2012, see the following topics: __________________________________________________________________________________________________________________ Windows Server 2012 MMC Snap-in Crash Windows Server 2012 iSCSI Target Role Does…

Directory for Bitmap Must Be Created Prior to Relocation

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » Directory for Bitmap Must Be Created Prior to Relocation

Description If you choose to relocate the bitmap file from the default location (%EXTMIRRBASE%\Bitmaps), you must first create the new directory before changing the location in the registry and rebooting the system.

SIOS DataKeeper for Windows

SIOS DataKeeper for Windows

Your information resource for SIOS DataKeeper Standard Edition SIOS Technology Corp. maintains documentation for all supported versions of SIOS DataKeeper Standard Edition. We welcome your suggestions and feedback. To help us continue to improve our documentation,…

Administration

SIOS DataKeeper for Windows Technical Documentation » Administration

The topics in this section provide detailed instructions for performing DataKeeper administration tasks. _____________________________________________________________________________________________________________________________________________________ DataKeeper…

GETEXTENDEDVOLUMEINFO

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETEXTENDEDVOLUMEINFO

EMCMD GETEXTENDEDVOLUMEINFO This command returns extended volume information about the selected volume such as disk signature, physical disk offset and internal disk id. The parameters are: This can be either the source or the target systems.…

Restrictions

SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions

Included below are restrictions associated with DataKeeper and DataKeeper Cluster Edition as well as possible workarounds and/or solutions. __________________________________________________________________________________________________________________ Bitlocker…

GETCONFIGURATION

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETCONFIGURATION

EMCMD GETCONFIGURATION This command retrieves and displays the net alert settings (also referred to as “volume attributes”) for the volume. The parameters are: This can be either the source or the target systems. The…

GETSNAPSHOTLOCATION

SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETSNAPSHOTLOCATION

EMCMD GETSNAPSHOTLOCATION This command retrieves the currently configured snapshot location (directory path) for the given volume on the given system. It will return an empty result if the snapshot location is not configured on the given volume. The parameters…

DKCE Support Matrix

NO TOC » DKCE Support Matrix

Server Components Supported Operating System v8.0.0 v8.0.1 v8.1.0 v8.2.0 v8.2.1 v8.3.0 v8.4.0 v8.5.0 v8.5.1 v8.6.0 v8.6.1 Note: The operating system versions listed…