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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…

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…

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…

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…

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…

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…

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;…

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…

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…

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…

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…

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…

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,…

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 …

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…

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…

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…

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…

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…

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…

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…

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 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…

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…

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. …

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…

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…

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…

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…

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…

Installation

NO TOC » DataKeeper Cluster Edition Installation Guide » Installation

Once you have downloaded the DataKeeper Cluster Edition software, the topics that follow explain the installation process. Core Software Installing Core Third Party Product Files Application Directory Anomaly Localized Language Supplement Silent…

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…

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…

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…

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…

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…

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…

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…

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…

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…

GETSERVICEINFO

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

EMCMD GETSERVICEINFO This command retrieves version and other information about the SIOS DataKeeper service and driver that is running on the specified machine. The parameters are: This can be either the source or the target systems. Sample…

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…

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…

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…

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 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,…

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…

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…

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…

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…

Data Transfer Network Protocols

SIOS DataKeeper for Windows Technical Documentation » FAQs » Data Transfer Network Protocols

Question What are the network protocols used for SIOS DataKeeper Data Transfer? Answer SIOS DataKeeper uses named pipe communication and TCP Sockets.

Administration

SIOS DataKeeper for Windows Technical Documentation » Administration

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

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…

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.…

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.

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…

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…

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…

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 –…

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…

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…

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 …

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.…

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…

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.

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…

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…

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…

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…

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…

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…

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…

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…

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

Delete and Switchover Actions Grayed Out

SIOS DataKeeper for Windows Technical Documentation » FAQs » Delete and Switchover Actions Grayed Out

Question Why are the Delete and Switchover actions grayed out on the DataKeeper User Interface? Answer If the volume is under clustering protection (Microsoft clustering or SIOS LifeKeeper clustering), these actions are disabled.

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…

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…

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…

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…

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,…

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 …

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…

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…

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…

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…

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…

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:…

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,…

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…

Event Log Considerations

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

It is important that SIOS DataKeeper be able to write to the Event Log. You should ensure that the Event Log does not become full. One way to accomplish this is to set the Event Log to overwrite events as needed: Open the Event Log. Right-click on System Log…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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.…

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: …

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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…

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. …

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 –…

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…

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…

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…

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…

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…