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Using Microsoft iSCSI Target With DataKeeper on Windows 2012

DataKeeper Cluster Edition 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 Cluster Edition Technical Documentation

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 across the network to one…

Uninstalling SIOS DataKeeper Cluster Edition

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…

DataKeeper Cluster Edition Installation Guide

The DataKeeper Cluster Edition Installation Guide contains information on how to properly install and license your software. The DataKeeper Cluster Edition Technical Documentation provides more detailed information necessary to complete your…

DataKeeper Cluster Edition Startup Guide

This startup guide provides the minimum necessary steps and related information to start using DataKeeper Cluster Edition. For specific operations of the Windows OS itself, please check the manual of your OS. In this guide, the product name DataKeeper Cluster Edition…

DataKeeper Cluster Edition Release Notes

SIOS DataKeeper Cluster Edition Release Notes Version 10.0 *v10.0 refers to all v10.0.x product versions. Released November 11, 2025 Important!! Read This Document Before Attempting To Install Or Use This Product! This document contains last minute…

Upgrading SIOS DataKeeper Cluster Edition

DataKeeper Cluster Edition Installation Guide » Upgrading SIOS DataKeeper Cluster Edition

*v10.0 refers to all v10.0.x product versions. !Before upgrading to v10.0.0, see this Known Issue. !Before upgrading from v8.10.2 or v8.11.0 to releases v10.0.0 or later, see this Known Issue. Upgrading DataKeeper Cluster Edition from previous versions of…

Installing Core

DataKeeper Cluster Edition Installation Guide » Installation » Installing Core

Installing the DataKeeper Cluster Edition Core Software SIOS DataKeeper Cluster Edition uses the Flexera InstallShield product to provide a standard installation interface. A license must be obtained and installed for each server in the cluster. We recommend that you…

SIOS DataKeeper Cluster Edition Product Overview

SIOS DataKeeper Cluster Edition is a software add-on that integrates simply and seamlessly with Windows Server Failover Clustering (WSFC) to add performance-optimized host-based synchronous or asynchronous replication. SIOS DataKeeper allows you to easily create a…

Deploying DataKeeper Cluster Edition in Azure

DataKeeper Cluster Edition in a Cloud Environment » Deploying DataKeeper Cluster Edition in Azure

DEPLOYING MICROSOFT SQL SERVER 2017 FAILOVER CLUSTERS IN AZURE RESOURCE MANAGER (ARM) Before beginning, make sure you read the DataKeeper Cluster Edition Release Notes for the latest information. It is highly recommended that you read and understand the DataKeeper…

Deploying DataKeeper Cluster Edition in AWS

DataKeeper Cluster Edition in a Cloud Environment » Deploying DataKeeper Cluster Edition in AWS

Introduction Best Practices Recommended Instance Types Manual Deployment of a SQL Server Failover Cluster Instance

DataKeeper Cluster Edition in a Cloud Environment

Deploying DataKeeper Cluster Edition in AWS Deploying DataKeeper Cluster Edition in Azure How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper Configure a File Server Cluster in Azure Spanning Multiple Availability…

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

DataKeeper Cluster Edition Technical Documentation » User Guide » 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;…

Remove DataKeeper Storage from a Windows Server Failover Cluster Role

DataKeeper Cluster Edition Technical Documentation » FAQs » Remove DataKeeper Storage from a Windows Server Failover Cluster Role

To remove an existing DataKeeper Resource/Mirror from Windows Server Failover Clustering: Without impacting the existing role in WSFC, i.e. File Shares, SAP, Oracle, SQL Without having to run various emcmd commands, e.g. deletelocalmirroronly,…

Setup of iSCSI Initiator on Windows 2012

DataKeeper Cluster Edition 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…

How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper

DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper

Introduction The following is a detailed, step-by-step guide on how to cluster SAP ASCS and ERS running on Windows in the AWS cloud. The examples assume that there are two nodes in the cluster (SIOS1, SIOS2) and each node resides in a different availability zone in…

Server 2012: Server Manager “File and Storage Services” Disk Status

DataKeeper Cluster Edition Technical Documentation » FAQs » Server 2012: Server Manager “File and Storage Services” Disk Status

Question Why are DataKeeper Volumes that are being used in a Microsoft Failover Cluster not shown by Server Manager as “Clustered”? Answer On Server 2012, the new Server Manager tool is capable of detecting if a complete “Disk” is being used by Failover…

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

DataKeeper Cluster Edition Technical Documentation » DataKeeper 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…

Using EMCMD with SIOS DataKeeper

DataKeeper Cluster Edition Technical Documentation » 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

DataKeeper Cluster Edition Technical Documentation » 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…

Windows Server 2016 Specific Issues

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2016 Specific Issues

For issues related to Windows Server 2016, see the following topic: ____________________________________________________________________________________________________________________ Occasional Job Creation Failure WSFC 2016 File Shares Cannot be Created…

DataKeeper Service Log On ID and Password Selection

DataKeeper Cluster Edition Technical Documentation » 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…

Running chkdsk on Cluster Volumes during Cluster Volume Online

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Running chkdsk on Cluster Volumes during Cluster Volume Online

DataKeeper runs chkdsk on all mirrored volumes prior to the volume being available for use. There is a numeric Cluster Property named DiskRunChkDsk associated with each DataKeeper Volume resource created. DataKeeper now creates a new flag DiskRunChkDsk in Windows…

Deploying a File Server Failover Cluster Instance using the Azure Portal

DataKeeper Cluster Edition in a Cloud Environment » Configure a File Server Cluster in Azure Spanning Multiple Availability Zones(AZ) » Deploying a File Server Failover Cluster Instance using the Azure Portal

To build a 2-node File Server Failover Cluster Instance in Azure, we are going to assume you have a basic Virtual Network based on Azure Resource Manager and you have at least one virtual machine up and running and configured as a Domain Controller. Once you have a…

Core Software

DataKeeper Cluster Edition Installation Guide » Installation » Core Software

DataKeeper Cluster Edition Core Software DataKeeper DataKeeper Driver (ExtMirr.sys) DataKeeper Service (ExtMirrSvc.exe) Command Line Interface (EMCMD.exe) DataKeeper GUI (Datakeeper.msc) Packaging files, LifeKeeper for Windows…

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

DataKeeper Cluster Edition 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…

Mirror Creation and Cluster Configuration

DataKeeper Cluster Edition 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…

DataKeeper Volume Not Available as Cluster Resource Type

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » DataKeeper Volume Not Available as Cluster Resource Type

WSFC Server – The DataKeeper Volume is Not Available as a Cluster Resource Type After DataKeeper is Installed in a Microsoft WSFC Environment Error/Message The DataKeeper Volume is not available as a cluster resource type after DataKeeper is installed in a…

WSFC 2016 File Shares Cannot be Created for File Server Role Using Server Manager or Failover Cluster Manager

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2016 Specific Issues » WSFC 2016 File Shares Cannot be Created for File Server Role Using Server Manager or Failover Cluster Manager

Description Once a cluster File Server role is created, neither Server Manager nor Failover Cluster Manager can be used to initially create the share. Suggested Action Microsoft Article 2804526 provides a high level overview of several WSFC Server 2016 issues…

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

DataKeeper Cluster Edition Technical Documentation » User Guide » 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…

Extending a Traditional 2-Node WSFC SQL Server Cluster to a Third Node via DataKeeper

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Extending a Traditional 2-Node WSFC SQL Server Cluster to a Third Node via DataKeeper

When replicating from a WSFC SQL Server 2-node cluster to a third node via DataKeeper, the following tasks are required: Replace the existing WSFC physical disk resource with a DataKeeper volume resource that supports data replication. Change the quorum type to…

Antivirus Software, Malware, etc. Exclusions for DataKeeper for Windows

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Antivirus Software, Malware, etc. Exclusions for DataKeeper for Windows

Description Antivirus software, Malware tools and other system security monitoring tools could interfere with the proper running of DataKeeper and stop DataKeeper from updating a DataKeeper registry key. All of the following should be considered as some can also…

DataKeeper Intent Log files on AWS Ephemeral Storage

DataKeeper Cluster Edition Technical Documentation » User Guide » DataKeeper Intent Log files on AWS Ephemeral Storage

DataKeeper systems that are running on AWS instances which are configured with local instance storage (i.e. ephemeral disks) can use the instance storage to store DataKeeper intent log files (i.e. bitmap files). It is important to be sure that when using AWS ephemeral…

Extending a Single SQL Server Node to a Cluster

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Extending a Single SQL Server Node to a Cluster

This guide explains how to install a single SQL Server node and extend it to a clustered node. Please read this document carefully prior to installation. Planning Steps: Start with a Microsoft SQL Server standalone node, where data resides on the C drive. Note:…

Manual Deployment of a SQL Server Failover Cluster Instance

DataKeeper Cluster Edition in a Cloud Environment » Deploying DataKeeper Cluster Edition in AWS » Manual Deployment of a SQL Server Failover Cluster Instance

*DISCLAIMER: While the following completely covers the high availability portion within the scope of our product, this is a setup “guide” only and should be adapted to your own configuration. *Please refer to the AWS Marketplace for a list of supported…

DataKeeper Troubleshooting

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting

The topics in this section contain important information about known issues and restrictions offering possible workarounds and/or solutions. Solutions Known Issues and Workarounds Message Catalogs Restrictions

Install DataKeeper

DataKeeper Cluster Edition in a Cloud Environment » Configure a File Server Cluster in Azure Spanning Multiple Availability Zones(AZ) » Install DataKeeper

After the cluster is created, DataKeeper is installed. It is important to install DataKeeper after the initial cluster is created so the custom cluster resource type can be registered with the cluster. If you installed DataKeeper before the cluster was created you will…

Awareness of Windows Filenames and Directory Names

DataKeeper Cluster Edition 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…

Extending a Clustered DataKeeper Volume to a Node Outside the Cluster

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Extending a Clustered DataKeeper Volume to a Node Outside the Cluster

DataKeeper Volume cluster resources can be extended to a DR Node for Disaster Recovery purposes. In the event of a complete failure of all systems in the cluster, data will be accessible on the DR Node (referred to as the “DR Node”). Here you will find instructions…

DataKeeper Cannot be used as a Quorum Device for a Cluster

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » DataKeeper Cannot be used as a Quorum Device for a Cluster

Question Can a DataKeeper drive be used for a quorum disk? Answer No, a DataKeeper drive cannot be used for a quorum disk. The quorum type is set to Node Majority if the number of nodes is odd (ex: 3-node cluster). The quorum type is set to Node and File Share…

Installing Localized Language Supplement

The Japanese Language Supplement contains Japanese localization language content for both LifeKeeper and DataKeeper products. When using the legacy GUI (JavaGUI) or the MMC-based GUI for DataKeeper for Windows in a Japanese environment, installing the Language…

DataKeeper Target Snapshot

DataKeeper Cluster Edition Technical Documentation » User Guide » DataKeeper Target Snapshot

Overview *The TAKESNAPSHOT command does not work with mirrors that have different drive letters. DataKeeper’s target snapshot feature, integrated with both DataKeeper and DataKeeper Cluster Edition, is the process of creating point in time copies of replicated…

DataKeeper Notification Icon

DataKeeper Cluster Edition Technical Documentation » User Guide » DataKeeper Notification Icon

Mirror Status Notification 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:…

DataKeeper Volume Resize

DataKeeper Cluster Edition 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 …

About DataKeeper Licensing

DataKeeper Cluster Edition Installation Guide » About DataKeeper Licensing

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 and run DataKeeper Cluster…

Configure a File Server Cluster in Azure Spanning Multiple Availability Zones(AZ)

DataKeeper Cluster Edition in a Cloud Environment » Configure a File Server Cluster in Azure Spanning Multiple Availability Zones(AZ)

This step by step guide contains detailed steps that are required to deploy a 2-node File Server Failover Cluster that spans the new Availability Zones in a single region of Azure. The guide assumes that you have basic knowledge of Azure as well as Failover Clustering.…

Extending a Traditional 2-Node WSFC Cluster to a Third Node via DataKeeper

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Extending a Traditional 2-Node WSFC Cluster to a Third Node via DataKeeper

When replicating from a WSFC 2-node cluster to a third node via DataKeeper, the following tasks are required: Replace the existing WSFC physical disk resource with a DataKeeper volume resource that supports data replication. Change the quorum type to Node…

Using Disk Management

DataKeeper Cluster Edition 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…

Primary Server Shutdown

DataKeeper Cluster Edition 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…

Secondary Server Failures

DataKeeper Cluster Edition 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…

DataKeeper Volume Resize Restriction

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Restrictions » DataKeeper Volume Resize Restriction

The DataKeeper volume resize procedure should be performed on only one volume at a time.

SIOS DataKeeper Intent Log

DataKeeper Cluster Edition Technical Documentation » 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…

Setting Up SIOS DataKeeper

DataKeeper Cluster Edition Technical Documentation » User Guide » Getting Started » 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…

Hyper-V Host Cluster Error

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Hyper-V Host Cluster Error

Failover Cluster Error After Changing Virtual Machine Configuration While VM Is Clustered Description If Failover Cluster Manager is used to modify the VM configuration while the VM is clustered such as adding a Network Interface to the VM, “Refresh Virtual…

Using Volume Shadow Copy

DataKeeper Cluster Edition 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…

Add a Node to the Cluster

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Add a Node to the Cluster

When adding a node to a cluster, uncheck the Add all eligible storage to the cluster checkbox. It is checked by default. If it is not unchecked it will cause all of the storage that is configured with DataKeeper to be turned into Cluster storage and all roles in…

Evicting a Node from a Cluster

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Evicting a Node from a Cluster

Evict the node using Windows Failover Cluster user interface. When a node is evicted the mirror with remain intact and will continue mirroring outside of the cluster. The evicted node will no longer be on the list of possible owners.

Connecting to a Server

DataKeeper Cluster Edition Technical Documentation » User Guide » Getting Started » 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

DataKeeper Cluster Edition Technical Documentation » User Guide » Getting Started » 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.

DataKeeper Driver (ExtMirr) Message Catalog

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Message Catalogs » DataKeeper Driver (ExtMirr) Message Catalog

Use Control F to search for a specific error code. Code Severity Message Cause Action 1 Info The SteelEye DataKeeper driver version 7.0 has started successfully. 2 Error The…

DataKeeper GUI (SDRSnapIn) Message Catalog

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Message Catalogs » DataKeeper GUI (SDRSnapIn) Message Catalog

Use Control F to search for a specific error code. Code Severity Message Cause Action 0 Error SDRDataKeeperService: Mirror creation failed, rolling back the job endpoint. 0 Warning…

DataKeeper Service (ExtMirrSvc) Message Catalog

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Message Catalogs » DataKeeper Service (ExtMirrSvc) Message Catalog

Use Control F to search for a specific error code. Code Severity Message Cause/Action 17 Info The SIOS DataKeeper Service version %1 is starting. 18 Warning The SIOS DataKeeper Service has been…

Bitlocker Does Not Support DataKeeper

DataKeeper Cluster Edition Technical Documentation » DataKeeper 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. * EFS (Encrypting File System) , *TDE (Transparent Disk…

DataKeeper Volume Resource Health Check

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » DataKeeper Volume Resource Health Check

A DataKeeper Volume resource provides two functions that are used by the Microsoft Cluster service to check for availability and health of the DataKeeper Volume resource. A simple check LooksAlive and a more rigorous check IsAlive. LooksAlive The Cluster service…

DataKeeper Volume Resource Private Properties

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » DataKeeper Volume Resource Private Properties

A DataKeeper Volume resource includes several private properties that are used by DataKeeper Cluster Edition. Among these properties are: VolumeLetter (REG_SZ) – the volume letter that is replicated by DataKeeper and associated with this DataKeeper Volume…

Removing a Clustered DataKeeper Volume

DataKeeper Cluster Edition Installation Guide » Installation » Removing a Clustered DataKeeper Volume

To remove a Clustered DataKeeper Volume follow these steps: Launch the Failover Cluster Manager. Select the Role and related DataKeeper Storage. Remove the DataKeeper Volume resource from the Role. This will move the DataKeeper Volume resource to the…

DataKeeper Volume cannot come Online after Network Failure with Clustered IP Address on Replication Network

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » DataKeeper Volume cannot come Online after Network Failure with Clustered IP Address on Replication Network

If you have multiple cluster networks, IP Addresses shouldn’t be set up on the same network that DataKeeper Volume resources are using for replication. Network errors may cause the DataKeeper mirror to go into a Paused state. If the network error also causes the…

Error 1265 when running DataKeeper Takesnapshot

DataKeeper Cluster Edition Technical Documentation » Components » DataKeeper Service Log On ID and Password Selection » Error 1265 when running DataKeeper Takesnapshot

PROBLEM: Taking a snapshot when running the command on the target system with DataKeeper fails with error 1265. C:\Program Files (x86)\SIOS\DataKeeper>emcmd (target-server-name) TAKESNAPSHOT (volume-letter of mirrored volume) Status = 1265 emcmd (target system…

Creating the SQL Server FCI

Step by Step SQL Server 2019 FCI in OCI » Creating the SQL Server FCI

Install DataKeeper Cluster Edition Before you can proceed with the next steps, you must install DataKeeper Cluster Edition on SQL1 and SQL2. Download the setup executable and run the DataKeeper setup on both nodes. Refer to the SIOS documentation for specific guidance…

SQL FCI on Workgroup Clusters

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Restrictions » SQL FCI on Workgroup Clusters

According to Microsoft, SQL Server failover cluster instance (FCI) requires the cluster nodes to be domain joined. Due to this restriction SIOS DataKeeper Cluster Edition cannot be used to protect Microsoft SQL Server Failover Cluster Instances in a workgroup…

Using the -proxy option with EMCMD

DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » 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 first,…

Creating a DataKeeper Volume Resource in WSFC

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Creating a DataKeeper Volume Resource in WSFC

Automatic Creation of a Mirror in WSFC Use the SIOS DataKeeper GUI to configure a mirror. At the completion of the mirror creation operation, the following dialog box will pop up which will allow you to automatically add the mirror as a DataKeeper volume…

Creating Other Server Resource in WSFC

DataKeeper Cluster Edition Technical Documentation » User Guide » 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…

DataKeeper Failover Clustering Resource DLL (DataKeeperVolume) Message Catalog

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Message Catalogs » DataKeeper Failover Clustering Resource DLL (DataKeeperVolume) Message Catalog

Use Control F to search for a specific error code. Code Severity Message Cause/Action 17 Info DataKeeper Cluster Resource ‘Online’ operation for Volume ‘Y:’ was successful. 18 …

Clustering

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering

Running chkdsk on Cluster Volumes during Cluster Volume Online Creating a DataKeeper Volume Resource in WSFC Manual Creation of a Mirror in WSFC DataKeeper Volume Resource Health Check DataKeeper Volume Resource Private Properties Extending a Clustered DataKeeper…

Pause and Unlock

DataKeeper Cluster Edition 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

DataKeeper Cluster Edition 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 –…

How to add a newly-created volume to DataKeeper

DataKeeper Cluster Edition Technical Documentation » Configuration » How to add a newly-created volume to DataKeeper

After a new volume has been created, formatted, and assigned a drive letter, run the following command from the command line in order to be able to start using the volume for mirror and job creation: From a CMD prompt: “%ExtMirrBase%\EMCMD” .…

Configuration of Data Replication From a Cluster Node to External DR Site

DataKeeper Cluster Edition Technical Documentation » Configuration » Configuration of Data Replication From a Cluster Node to External DR Site

For more information, see Extending a clustered datakeeper volume to a node outside the cluster.

Synchronous and Asynchronous Mirroring

DataKeeper Cluster Edition Technical Documentation » 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…

Read and Write Operations

DataKeeper Cluster Edition Technical Documentation » 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…

AWS Issues and Workarounds

DataKeeper Cluster Edition 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…

Known Issues and Workarounds

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds

Included below are known issues open against DataKeeper and DataKeeper Cluster Edition as well as possible workarounds and/or solutions. __________________________________________________________________________________________________________________ Access to…

Step by Step SQL Server 2019 FCI in OCI

Introduction *The steps in this guide are very similar on all currently supported versions of Windows and SQL Server. If you are deploying business-critical applications in Oracle Cloud Infrastructure (OCI), it’s crucial to understand and leverage the…

DataKeeper Does Not Support Lowercase Drive Letters as Mirror Endpoint for Jobs

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » DataKeeper Does Not Support Lowercase Drive Letters as Mirror Endpoint for Jobs

Lowercase volume letters for jobs in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ExtMirr\Parameters\Jobs is not compatible with DataKeeper. If the drive letters become lowercase, they will need to be manually changed to uppercase in the registry. If…

Split-Brain Issue and Recovery

DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » Split-Brain Issue and Recovery

When protecting DataKeeper volume resources in Microsoft WSFC, if all nodes are included in the cluster split-brain recovery should occur automatically. However, in a Node Outside the Cluster scenario a split-brain may occur if network connectivity is lost to the DR…

Create the VCN and Subnets

Step by Step SQL Server 2019 FCI in OCI » Create the VCN and Subnets

This guide assumes you have some familiarity with Oracle Cloud Infrastructure (OCI) and a basic understanding of networking concepts. It illustrates common configuration tasks with descriptions and, where necessary, provides additional guidance to navigate some of the…

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

DataKeeper Cluster Edition 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.

Switchover and Failover with Multiple Targets

DataKeeper Cluster Edition 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…

Stop Replication Between Source and Target

DataKeeper Cluster Edition 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…

Delete and Switchover Actions Grayed Out

DataKeeper Cluster Edition 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.

Join SQL1 and SQL2 to the Domain

Step by Step SQL Server 2019 FCI in OCI » Join SQL1 and SQL2 to the Domain

Certification Information

Server Components The following operating systems can install SIOS DataKeeper Cluster Edition and utilize its replication functionality. Microsoft Windows Server 2025 Standard / Datacenter Editions Microsoft Windows Server 2022 Standard / Datacenter…

User Guide

DataKeeper Cluster Edition Technical Documentation » User Guide

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

FAQs

DataKeeper Cluster Edition Technical Documentation » FAQs

Refer to this section for answers to the most frequently asked questions about SIOS DataKeeper and SIOS DataKeeper Cluster Edition. ______________________________________________________________________________________________________________ Add a New Disk / DK…

Resources cannot Failover after a Target VOLUME has been replaced

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Resources cannot Failover after a Target VOLUME has been replaced

Description When a target volume is replaced, there is no data on the new target volume. However, DataKeeper will re-establish the mirror when the Source node is able to communicate with the Target, and will perform a partial resync. This results in incomplete and…

Resources cannot Failover after a Target NODE/SYSTEM has been replaced

DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Resources cannot Failover after a Target NODE/SYSTEM has been replaced

Error message: Log Name: System Source: Microsoft-Windows-FailoverClustering Date: 2/12/2020 6:14:29 PM Event ID: 1205 Task Category: Resource Control Manager Level: Error Keywords: User: SYSTEM Computer: servername.FQDN Description The Cluster service failed to…

Deploy an Active Directory Domain Controller in Azure

DataKeeper Cluster Edition in a Cloud Environment » Configure a File Server Cluster in Azure Spanning Multiple Availability Zones(AZ) » Deploy an Active Directory Domain Controller in Azure

Deploy a Virtual Machine that will work as a Domain Controller for the cluster that is going to be deployed. This step can be skipped if there is a Domain Controller already configured. *This Virtual Machine running a Domain Controller should be in a different…

Installation

DataKeeper Cluster Edition Installation Guide » Installation

*Before installing the product, first ensure that the prerequisites are met: Once you have downloaded the DataKeeper Cluster Edition software, the following topics explain the installation process. Core Software Installing Core Third Party Product…

AWS Cross Region Support

DataKeeper Cluster Edition in a Cloud Environment » Deploying DataKeeper Cluster Edition in AWS » AWS Cross Region Support

Step By Step Configuring Amazon Ec2 For Business Critical Applications The diagram above generally shows an active/source node (in green) synchronously replicating to a passive node, both existing in the same region (Region A). Synchronous replication can also be…