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Restrictions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Restrictions
Included below are restrictions associated with DataKeeper and DataKeeper Cluster Edition as well as possible workarounds and/or solutions. __________________________________________________________________________________________________________________ Bitlocker…
Non-mirrored Volume Resource
DataKeeper Cluster Edition Technical Documentation » User Guide » 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…
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…
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…
WSFC – MS DTC Resource Failure
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » WSFC – MS DTC Resource Failure
Error/Message The cluster resource host subsystem (RHS) stopped unexpectedly. An attempt will be made to restart it. This is usually due to a problem in a resource DLL. Please determine which resource DLL is causing the issue and report the problem to the resource…
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…
Safe Creation of a Shared-Storage Volume Resource
DataKeeper Cluster Edition 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…
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 …
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 2012 File Server Resource Manager Event Log Errors
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » WSFC 2012 File Server Resource Manager Event Log Errors
Description In Windows 2012, if a File Server Role is created which uses one or more DataKeeper Volume resources and the File Server Resource Manager feature is enabled on the system, then a series of “SRMSVC” errors (ID 8228) will be received on the…
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
WSFC 2012 Failover Cluster Manager UI Defect (Delete Action Missing)
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » WSFC 2012 Failover Cluster Manager UI Defect (Delete Action Missing)
Description On Windows Server 2012, the Microsoft Failover Cluster Manager UI tool has a defect. When a “right-click” is performed on a DataKeeper Volume resource from the Available Storage group, the drop-down action list does not appear. That action list would…
Extending a Traditional 2-Node Cluster to a Shared-Replicated Configuration
DataKeeper Cluster Edition Technical Documentation » User Guide » 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…
Add a New Disk / DK Volume to an Existing Clustered SQL Role
DataKeeper Cluster Edition Technical Documentation » FAQs » Add a New Disk / DK Volume to an Existing Clustered SQL Role
When adding an additional disk to an existing cluster, the dependency relationship must be verified and configured manually based on the following requirements: The IP Address and the Disk Resource/DataKeeper Volume do not depend on anything The SQL Network Name…
Step 10: Second Cluster Node Installation
DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper » Step 10: Second Cluster Node Installation
The first cluster node installation completed without too much effort. In a normal cluster where all the cluster nodes reside in the same subnet, the installation of the second cluster node would run just as smoothly. However, because this is AWS and the nodes reside…
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 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:…
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…
Installing and Using DataKeeper Cluster Edition on Windows Server 2008 R2 / 2012 Core Platforms
DataKeeper Cluster Edition Technical Documentation » User Guide » 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…
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…
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;…
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…
Most Common DKCE Clustering Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions » DKCE Common Solutions » Most Common DKCE Clustering Solutions
The following are the most commonly requested clustering related solutions. Perform a Health Check How do I add/register an existing DataKeeper Volume to a cluster? Why has my Role FAILED in WSFC (e.g. SQL, SAP, FileShare, Hyper-V, Generic App)? For…
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…
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…
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…
Most Common DKCE Networking Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions » DKCE Common Solutions » Most Common DKCE Networking Solutions
The following are the most commonly requested networking related solutions. SIOS DataKeeper Service Will Not Start DataKeeper Service Stopped Unexpectedly Issues/Symptoms: The DataKeeper Service periodically stops. The System Event Viewer will produce the…
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…
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…
DataKeeper Cluster Edition Release Notes
DataKeeper Cluster Edition Release Notes
SIOS DataKeeper Cluster Edition Release Notes Version 8.9.0 (Version 8 Update 9) Released July 13, 2022 !IMPORTANT: End of Support for 2008 R2 SIOS is ending support for Microsoft Windows Server 2008 R2 Enterprise and DataCenter Editions on January…
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…
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…
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.…
Step: 9 SAP High-Availability System Installation
DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper » Step: 9 SAP High-Availability System Installation
First Cluster Node Installation Before starting the SAP Installation, make sure you have created a DNS Type A record for SAP Virtual Instance Host at DNS Server as we described in an earlier step. You will perform a regular SAP Windows Cluster installation. For more…
New Resources Offline But Unlocked
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » New Resources Offline But Unlocked
WSFC Server – Newly Created Resources Appear Offline But Are Unlocked Error/Message Newly created resources appear offline but are unlocked. Description The new resource is always offline and unlocked before it is used. Suggested Action Switch the resource…
DataKeeper Cluster Edition Technical Documentation
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…
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…
UPDATECLUSTERTARGET STATEPROPERTIES
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » UPDATECLUSTERTARGET STATEPROPERTIES
EMCMD UPDATECLUSTERTARGET STATEPROPERTIES This command will update the TargetState private properties for all clustered DataKeeper volumes for which the given system is the source. This is the system whose volume states will be checked. For…
Creating Mirrors With Shared Volumes
DataKeeper Cluster Edition 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…
Configuring Mirrors
DataKeeper Cluster Edition Technical Documentation » User Guide » Configuring Mirrors
Creating a Mirror Creating Mirrors With Shared Volumes Safe Creation of a Shared-Storage Volume Resource Creating Mirrors With Multiple Targets Switchover and Failover with Multiple Targets
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…
CREATEMIRROR
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » CREATEMIRROR
EMCMD CREATEMIRROR [options] This command creates a mirror between two machines, using the same drive letter on each. *If the CREATEMIRROR command is executed in a shared storage configuration, the configuration mask must be updated using the SETCONFIGURATION…
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…
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…
Video Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions » Video Solutions
Frequently Asked Questions How do you resize a Volume? Summary: ISSUE: How do you resize a Datakeeper Volume? DataKeeper allows users to extend and shrink their DataKeeper volumes dynamically while retaining mirror settings. Once the resize is complete, a…
Windows Server 2012 Specific Issues
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues
For issues related to Windows Server 2012, see the following topics: __________________________________________________________________________________________________________________ Windows Server 2012 MMC Snap-in Crash Windows Server 2012 DataKeeper Switchover…
Windows 2012 File Share
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2012 Specific Issues » Windows 2012 File Share
When creating a fileshare using “SMB – Basic” on Windows 2012, by default the “Enable Continuous availability” flag is checked which prohibits creating a fileshare resource. To solve this problem, uncheck the box as shown in the picture. …
How to create a DK Replicated Volume that has Multiple Targets via CLI
DataKeeper Cluster Edition Technical Documentation » User Guide » Clustering » How to create a DK Replicated Volume that has Multiple Targets via CLI
The environment in this example looks like this: PRIMARY (10.0.2.100) – in AZ1 SECONDARY (10.0.3.100) – in AZ2 DR (10.0.1.10) – in a different Region *The Goals: • To create a synchronous mirror from PRIMARY to SECONDARY and an…
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…
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,…
SIOS DataKeeper Cluster Edition
SIOS DataKeeper Cluster Edition
Your information resource for SIOS DataKeeper Cluster Edition SIOS Technology Corp. maintains documentation for all supported versions of SIOS DataKeeper Cluster Edition. We welcome your suggestions and feedback. To help us continue to improve our documentation,…
DataKeeper Cluster Edition Quick Start Guide
DataKeeper Cluster Edition Quick Start Guide
This topic provides step-by-step instructions for installing and configuring DataKeeper Cluster Edition. The series of steps includes links to the documentation that describe each step in detail. Prerequisites and Installation Read the DataKeeper Cluster Edition…
Step: 8 Configure DataKeeper
DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper » Step: 8 Configure DataKeeper
It is now time to use DataKeeper to replicate the EBS volume(s) between each of the cluster nodes and to register the DataKeeper Volume Resource(s) in the cluster’s Available Storage. The steps below only need to be run on one of the cluster nodes. Connect to…
Intensive I-O with Synchronous Replication
DataKeeper Cluster Edition Technical Documentation » DataKeeper 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…
Switchover in an N-Shared x N-Shared Configuration
DataKeeper Cluster Edition Technical Documentation » User Guide » 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…
Message Catalogs
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Message Catalogs
DataKeeper Failover Clustering Resource DLL (DataKeeperVolume) Message Catalog DataKeeper Service (ExtMirrSvc) Message Catalog DataKeeper Driver (ExtMirr) Message Catalog DataKeeper GUI (SDRSnapIn) Message Catalog
N-Shared-Disk Replicated to One
DataKeeper Cluster Edition 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…
N-Shared-Disk Replicated to Multiple N-Shared-Disk Targets
DataKeeper Cluster Edition Technical Documentation » User Guide » Getting Started » N-Shared-Disk Replicated to Multiple N-Shared-Disk Targets
This is a complex configuration which combines the aspects of replicating a shared storage environment to multiple shared targets. 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…
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…
Most Common DKCE Installation Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions » DKCE Common Solutions » Most Common DKCE Installation Solutions
The following are the most commonly requested installation related solutions. How do I get and install my license(s)? Where can I get the latest software? (Log into the Customer Portal to access) Why can’t I create a new mirror? Firewall…
N-Shared-Disk Replicated to N-Shared-Disk
DataKeeper Cluster Edition 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. Steps to be replicated from the picture above: Create a shared volume between the first two nodes within the “Primary Site”. Storage (Shared Volume) 1…
Registry Entries
DataKeeper Cluster Edition Technical Documentation » Administration » Registry Entries
The following registry entries are associated with the SIOS DataKeeper service or driver and can be viewed and edited using Regedt32. *No values in any DataKeeper registry key should be modified unless they are listed here. *Lowercase volume letters for jobs in…
Creation of iSCSI Virtual Disks
DataKeeper Cluster Edition 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…
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.
Most Common DKCE Storage Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions » DKCE Common Solutions » Most Common DKCE Storage Solutions
The following are the most commonly requested storage related solutions. Preparing Storage for DataKeeper Usage Preparing Storage for DataKeeper Usage Summary This video explains the procedure for creating/preparing storage for Datakeeper. It also addresses…
User Interface – Shows Only One Side of the Mirror
DataKeeper Cluster Edition Technical Documentation » DataKeeper 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…
Windows Server 2012 MMC Snap-in Crash
DataKeeper Cluster Edition Technical Documentation » DataKeeper 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…
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…
Solutions
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Solutions
- Cloud Environment - How to properly use AWS instance storage (ephemeral storage/disk) If SIOS AMIs are not being deployed on an AWS server, these disk initialization steps must be considered. This was introduced with Windows 2016 and continues in later…
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…
WSFC 2012 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 2012 Specific Issues » WSFC 2012 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 2012 issues…
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…
High-Speed Storage Best Practices
DataKeeper Cluster Edition 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…
Mirror Properties
DataKeeper Cluster Edition Technical Documentation » User Guide » Working With Mirrors » Mirror Properties
Select a job in the Job Summary pane and right-click to choose Mirror Properties. This dialog displays the following information about the job, source and target systems: Job Name State (current state of the job; for example, Active) Source…
SWITCHOVERVOLUME
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » SWITCHOVERVOLUME
EMCMD SWITCHOVERVOLUME [-f] This command attempts to make the given system become the source for the requested volume. This command is for internal use only. The parameters are: This is the IP address of the system to become source. Note: Use the…
New-DataKeeperJob
DataKeeper Cluster Edition Technical Documentation » 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 …
Step 3: Create the Windows Server Failover Cluster
DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper » Step 3: Create the Windows Server Failover Cluster
Enable the Failover Clustering Feature Run the following Powershell Script on each cluster node: Install-WindowsFeature -Name Failover-Clustering -IncludeManagementTools Run Cluster Validation Run the following command on one of the nodes to validate the…
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…
UPDATEJOB
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » UPDATEJOB
EMCMD UPDATEJOB [ ]… This command is for internal use only.
Renaming a Job
DataKeeper Cluster Edition 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…
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…
Application Directory Anomaly
DataKeeper Cluster Edition Installation Guide » Installation » Application Directory Anomaly
The following file is installed in a directory other than the default directory that you selected during the DataKeeper installation procedure. This exception occurs when the operating system installs performance monitor counters. Path and File Name …
Duplicate IP Addresses Disallowed Within a Job
DataKeeper Cluster Edition Technical Documentation » DataKeeper 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…
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…
RESYNCMIRROR
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » RESYNCMIRROR
EMCMD RESYNCMIRROR [] This command forces the mirror to be fully resynced. The parameters are: This is the source system name. This is the drive letter of the mirror that should be resynced. This is the IP…
Creating a Job
DataKeeper Cluster Edition Technical Documentation » User Guide » Getting Started » Creating a Job
If not already connected, connect to the server where you want to create a job. From the right Actions pane, select Create Job. The Job Wizard will prompt you for a Job Name and Description. Enter the appropriate information and select Create Job to…
CLEARSNAPSHOTLOCATION
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » CLEARSNAPSHOTLOCATION
EMCMD CLEARSNAPSHOTLOCATION This command clears the snapshot location (directory path) for the given volume on the given system. Once this command executes successfully, snapshots will be disabled for the given volume. The parameters are: This is…
How to Replace A DKCE Node
DataKeeper Cluster Edition Technical Documentation » User Guide » How to Replace A DKCE Node
Replacing a node in a Windows Failover Cluster that uses DataKeeper Cluster Edition mirrored volumes involves making the following changes: Move any DataKeeper Volume resources from the node being replaced to another node in the cluster Using the registry editor,…
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…
TAKESNAPSHOT
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » TAKESNAPSHOT
*The TAKESNAPSHOT command does not work with mirrors that have different drive letters. 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…
CHANGEMIRRORTYPE
DataKeeper Cluster Edition Technical Documentation » 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. Note: The volume must be online. Refer to the examples below. See Synchronous and Asynchronous Mirroring for information about the supported…
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…
Replacing a Target
DataKeeper Cluster Edition Technical Documentation » User Guide » Working With Mirrors » Replacing a Target
When replacing the target volume, you must 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. Deleting the mirror discontinues replication altogether removing the mirror…
SETSNAPSHOTLOCATION
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » SETSNAPSHOTLOCATION
EMCMD SETSNAPSHOTLOCATION “” This command sets the snapshot location (directory path) for the given volume on the given system. The directory must be valid on the system in question, must be a local drive/path, must be an absolute path and cannot be left…
ReadOnly Host Caching
DataKeeper Cluster Edition in a Cloud Environment » Deploying DataKeeper Cluster Edition in Azure » ReadOnly Host Caching
According to this Microsoft article, caching is not recommended on disks hosting SQL/Server log files. If the workload is heavily utilizing the underlying disks (any other application than SQL/Server), disk caching should also be set to none. Please refer to…
Step 2: Configure Server Settings on each Cluster Node
DataKeeper Cluster Edition in a Cloud Environment » How to cluster SAP ASCS and ERS on Windows in AWS using WSFC with SIOS DataKeeper » Step 2: Configure Server Settings on each Cluster Node
Rename and add it to the Domain Turn off the Windows firewall Turn off IE Enhanced Security Configuration Install Chrome and make it the default browser Download the software to each server SAP Installer DataKeeper Software and…
Some SQL Server features do not work properly when installing DataKeeper on Windows Server 2008 R2 & SQL Server 2008
DataKeeper Cluster Edition Technical Documentation » DataKeeper Troubleshooting » Known Issues and Workarounds » Windows Server 2008 R2 Specific Issues » Some SQL Server features do not work properly when installing DataKeeper on Windows Server 2008 R2 & SQL Server 2008
Description When installing DataKeeper (or DataKeeper Cluster Edition) on Windows 2008 R2 & SQL Server 2008, some SQL Server features do not work properly due to the .NET Framework version. Perform each function to confirm that it is working properly. Suggested…
Initial Synchronization of Data Across the LAN or WAN
DataKeeper Cluster Edition 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…
CHANGEMIRRORENDPOINTS
DataKeeper Cluster Edition Technical Documentation » Using EMCMD with SIOS DataKeeper » CHANGEMIRRORENDPOINTS
Required actions to be taken before executing the changemirrorendpoints command Display job information for the volume Pause the Mirror using the EMCMD command line via the command line If the mirror is currently in a mirroring or resync state. If the mirror is…