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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…
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…
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…
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…
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…
DataKeeper Cluster Edition Technical Documentation
NO TOC » DataKeeper Cluster Edition Technical Documentation
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…
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…
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…
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…
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…
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…
Working With Shared Volumes
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes
Managing Shared Volumes Adding a Shared System Removing a Shared System
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,…
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 …
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…
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.
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…
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;…
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…
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…
DataKeeper Volume Resize Restriction
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » DataKeeper Volume Resize Restriction
The DataKeeper volume resize procedure should be performed on only one volume at a time.
Configuration of Data Replication From a Cluster Node to External DR Site
SIOS DataKeeper for Windows Technical Documentation » Configuration » Configuration of Data Replication From a Cluster Node to External DR Site
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…
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…
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…
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…
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…
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. …
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…
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…
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…
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…
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…
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…
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…
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…
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…
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.…
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…
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…
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…
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…
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…
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…
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…
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:…
GETTARGETMIRROREDVOLUMES
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETTARGETMIRROREDVOLUMES
EMCMD GETTARGETMIRROREDVOLUMES This command displays information about the volumes on the system that are currently the target in a mirror. Sample output: ** Calling GetTargetMirroredVolumes ** Returned 1 Target Volumes Target Volume 1 information: Volume Root …
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…
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…
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: …
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…
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…
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…
GETCOMPLETEVOLUMELIST
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETCOMPLETEVOLUMELIST
EMCMD GETCOMPLETEVOLUMELIST This command displays information on all volumes eligible to be mirrored or already in a mirror. Sample output: Volume 1 information: Volume Root = F: Volume Label = New Volume Volume File System…
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…
Disk-to-Disk
SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » Disk-to-Disk
This is a simple one server, two disks configuration, mirroring Volume X on Server A to Volume Y on Server A. The volumes that are used for Disk-to-Disk replication can’t also be configured to replicate to another system. *Disk to Disk does not support mirrors…
GETSOURCEMIRROREDVOLUMES
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » GETSOURCEMIRROREDVOLUMES
EMCMD GETSOURCEMIRROREDVOLUMES This command displays information about the volumes on the system that are currently the source in a mirror. Sample output: Status = 0 Source Volume = F: Source Label = New Volume Source #Targs = 2 Target 0 Target…
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…
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…
Removing a Shared System
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes » Removing a Shared System
To remove a shared system from either side of the mirror, bring up the Manage Shared Volumes dialog and uncheck the Include box for the system to be removed. When you click Done, the job will be updated so that the system is not part of the job. Warning: If a shared…
Adding a Shared System
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Shared Volumes » Adding a Shared System
To add a shared system to either the source or target side of a mirror, you must be connected to that system. You can connect to the system prior to starting the Manage Shared Volumes dialog, or you can click Connect to Server from within the dialog. In either case,…
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…
Configuring Mirrors
SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors
Creating a Mirror Creating Mirrors With Shared Volumes Safe Creation of a Shared-Storage Volume Resource Creating Mirrors With Multiple Targets Switchover and Failover with Multiple Targets
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
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…
CONTINUEMIRROR
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CONTINUEMIRROR
EMCMD CONTINUEMIRROR [] This command forces a paused or broken mirror to resume mirroring. On successful completion of the resync (full or partial), the mirror state is changed to Mirroring. This command will not automatically relock the target volume if it is…
Creating a Mirror
SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Creating a Mirror
Before creating a mirror, ensure the following: You have created a job to hold the mirror. The volume on both the source and target systems must be of the NTFS file system type. The target volume must be greater than or equal to the size of the source…
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…
PAUSEMIRROR
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » PAUSEMIRROR
EMCMD PAUSEMIRROR [] This command forces the mirror into a Paused state. The parameters are: This is the source system of the mirror to pause. Running the PAUSEMIRROR command on the target has no effect. The drive letter of the…
SETBLOCKTARGET
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » SETBLOCKTARGET
EMCMD SETBLOCKTARGET This command sets the state of the block target flag to TRUE. The block target flag when set to TRUE will prevent that system from ever becoming a target for the selected volume. This command is for internal use only. No output is produced when…
CLEARBLOCKTARGET
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » CLEARBLOCKTARGET
EMCMD CLEARBLOCKTARGET This command sets the state of the block target flag to FLASE. The block target flag when set to FALSE will allow that system to become a target for the selected volume. This command is for internal use only. No output is produced when running…
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…
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…
BREAKMIRROR
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » BREAKMIRROR
EMCMD BREAKMIRROR [] This command forces the mirror into a Broken state. Breaking the mirror will cause a full resync to occur when the mirror is continued or resynced. The parameters are: This is the source system of the mirror to break. Running…
Secondary Server Failures
SIOS DataKeeper for Windows Technical Documentation » Administration » Secondary Server Failures
In the event there is a failure affecting the secondary (target) system, the affected mirror is marked Paused. It is necessary to correct the condition that caused the secondary to fail and then resync the volumes. There are no write attempts made to the target after…
New-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 …
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…
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…
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. …
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…
Administration
SIOS DataKeeper for Windows Technical Documentation » Administration
The topics in this section provide detailed instructions for performing DataKeeper administration tasks. _____________________________________________________________________________________________________________________________________________________ DataKeeper…
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…
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…
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…
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…
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…
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…
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…
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…