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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…
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 » 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…
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.
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…
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…
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…
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…
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…
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…
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…
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…
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.
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…
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.
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:…
Configuration of Data Replication From a Cluster Node to External DR Site
SIOS DataKeeper for Windows Technical Documentation » Configuration » Configuration of Data Replication From a Cluster Node to External DR Site
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…
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…
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…
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…
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…
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…
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…
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…
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…
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.
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.
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,…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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 –…
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…
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. …
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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. …
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…
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…
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…
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…
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 –…
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…
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;…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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 …
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…
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…
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…
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…
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…
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…
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…
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…
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…
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.…
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…
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…
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
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…
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…
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…
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…
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…