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DataKeeper Cluster Edition Installation Guide
NO TOC » DataKeeper Cluster Edition Installation Guide
The DataKeeper Cluster Edition Installation Guide contains information on how to install and license your Cluster Edition software. Once you have completed the steps in this guide, you will be ready to configure your Cluster resources. The DataKeeper Cluster Edition…
SIOS DataKeeper for Windows Quick Start Guide
SIOS DataKeeper for Windows Quick Start Guide
This topic provides step-by-step instructions for installing and configuring DataKeeper Standard Edition. The series of steps includes links into the documentation that describe each step in detail. Prerequisites and Installation Read the SIOS Protection Suite for…
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…
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…
DataKeeper Cluster Edition Technical Documentation
NO TOC » DataKeeper Cluster Edition Technical Documentation
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 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…
DataKeeper User Guide
NO TOC » SIOS Protection Suite for Windows » DataKeeper » DataKeeper User Guide
The topics in this section are designed to be a reference for you as you get started using SIOS DataKeeper, helping you identify the type of configuration you are interested in implementing and providing detailed instructions for effectively using your SIOS DataKeeper…
Using DataKeeper Cluster Edition to Enable Multi-Site Hyper-V Clusters
NO TOC » SIOS Protection Suite for Windows » Clustering » Using DataKeeper Cluster Edition to Enable Multi-Site Hyper-V Clusters
Prerequisite Familiarity with Microsoft Windows Server, Microsoft Windows Failover Cluster Server Management and Hyper-V Virtual Management procedures and commands is highly recommended. Note: DataKeeper ClusterCluster Edition does not support Cluster Shared Volumes;…
Installing and Using DataKeeper Cluster Edition on Windows Server 2008 R2 / 2012 Core Platforms
NO TOC » SIOS Protection Suite for Windows » Clustering » Installing and Using DataKeeper Cluster Edition on Windows Server 2008 R2 / 2012 Core Platforms
Prepare the servers. Install Windows Server 2008 R2/2012 Core on two servers, configure IP, join a domain, configure firewall for remote administration, configure the server for remote access and install the Failover Cluster feature. Server Core Installation…
User Guide
SIOS DataKeeper for Windows Technical Documentation » User Guide
The topics in this section are designed to be a reference for you as you get started using SIOS DataKeeper, helping you identify the type of configuration you are interested in implementing and providing detailed instructions for effectively using your SIOS DataKeeper…
DataKeeper Components
SIOS DataKeeper for Windows Technical Documentation » Introduction » DataKeeper Components
SIOS DataKeeper for Windows is comprised of the following components: DataKeeper Driver (ExtMirr.sys) – The DataKeeper Driver is a kernel mode driver and is responsible for all mirroring activity between the mirror endpoints. DataKeeper Service…
Using SIOS DataKeeper Standard Edition To Provide Disaster Recovery For Hyper-V Virtual Machines
SIOS DataKeeper for Windows Technical Documentation » User Guide » Using SIOS DataKeeper Standard Edition To Provide Disaster Recovery For Hyper-V Virtual Machines
Considerations When preparing a Hyper-V environment that spans subnets, subnetting may need to be taken into consideration for any applications that are running inside the virtual machine. Some applications “hard code” IP addresses into their…
DataKeeper Volume Resize
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » DataKeeper Volume Resize
DataKeeper allows users to extend and shrink their DataKeeper volumes dynamically while retaining mirror settings. Once the resize is complete, a partial resync will be performed. Note: This resize procedure should be performed on only one volume at a time. !WARNING …
DataKeeper Notification Icon
SIOS DataKeeper for Windows Technical Documentation » User Guide » DataKeeper Notification Icon
The DataKeeper Notification Icon is an application that will show a summary of your DataKeeper mirrors in the Windows Notification Tray. The icon displayed indicates what conditions have been detected, with the following priority. Error: An error condition, such as…
DataKeeper Target Snapshot
SIOS DataKeeper for Windows Technical Documentation » User Guide » DataKeeper Target Snapshot
Overview DataKeeper’s target snapshot feature, integrated with both DataKeeper and DataKeeper Cluster Edition, is the process of creating point in time copies of replicated volumes allowing access to data on a standby cluster node without interrupting data…
Setting Up SIOS DataKeeper
NO TOC » SIOS Protection Suite for Windows » DataKeeper » Setting Up SIOS DataKeeper
Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree display and select Connect to…
Setting Up SIOS DataKeeper
SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup » Setting Up SIOS DataKeeper
Setting Up SIOS DataKeeper Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree…
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…
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.
DataKeeper Event Log Notification
SIOS DataKeeper for Windows Technical Documentation » Administration » DataKeeper Event Log Notification
The Event Log notification is a mechanism by which one or more users may receive email notices when certain events occur. The Windows Event Log can be set up to provide notifications of certain DataKeeper events that get logged. *Note: This option is only available…
SIOS DataKeeper for Windows
SIOS DataKeeper for Windows
Your information resource for SIOS DataKeeper Standard Edition SIOS Technology Corp. maintains documentation for all supported versions of SIOS DataKeeper Standard Edition. We welcome your suggestions and feedback. To help us continue to improve our documentation,…
Mirror Creation and Cluster Configuration
SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Mirror Creation and Cluster Configuration
Create your DataKeeper volumes and your cluster. See Creating a DataKeeper Volume Resource in WSFC for reference. *IMPORTANT: The iSCSI Target Role only supports DataKeeper Volumes that are mirrors of Simple Volumes placed on Basic Disks. If any of your mirrors are…
Using DKPwrShell with SIOS DataKeeper
SIOS DataKeeper for Windows Technical Documentation » Administration » Using DKPwrShell with SIOS DataKeeper
SIOS DataKeeper includes a powershell module (DKPwrShell) that allows a user to manipulate a DataKeeper mirror using Microsoft Powershell. Commands are passed to a SIOS DataKeeper service and will fail if the service is not running. With Microsoft Powershell v3 or…
Bitlocker Does Not Support DataKeeper
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions » Bitlocker Does Not Support DataKeeper
According to Microsoft, Bitlocker is not supported to work with Software RAID configurations. Since DataKeeper is essentially a software RAID 1, Microsoft does not support Bitlocker working with DataKeeper. Note: EFS (Encrypting File System) and TDE (Transparent Disk…
Using 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…
SIOS DataKeeper for Windows Technical Documentation
SIOS DataKeeper for Windows Technical Documentation
DataKeeper Service Log On ID and Password Selection
SIOS DataKeeper for Windows Technical Documentation » Introduction » DataKeeper Components » DataKeeper Service Log On ID and Password Selection
During a new DataKeeper installation setup, the user will be prompted for a DataKeeper Service Log On ID and Password. The DataKeeper Service uses authenticated connections to perform volume switchovers and make mirror role changes across multiple servers. The Log On…
DataKeeper Service Log On ID and Password Selection
SIOS DataKeeper for Windows Technical Documentation » Configuration » DataKeeper Service Log On ID and Password Selection
During a new DataKeeper installation setup, the user will be prompted for a DataKeeper Service Log On ID and Password. The DataKeeper Service uses authenticated connections to perform volume switchovers and make mirror role changes across multiple servers. The Log On…
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. …
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…
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
Server Login Accounts and Passwords Must Be Same on Each Server in the Cluster
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Server Login Accounts and Passwords Must Be Same on Each Server in the Cluster
The DataKeeper GUI cannot connect to the target server in a cluster if server Login Accounts and Passwords are different on each server. Error Message An Error Code 1326 will appear in the Application log (Note: The Error Code may also be a 2 with Event ID…
Licensing
NO TOC » SIOS Protection Suite for Windows » SIOS Protection Suite Installation Guide » Installing SIOS Protection Suite » Licensing
Obtaining and Installing the License DataKeeper Cluster Edition requires a unique license for each server. The license is a run-time license which means that you can install it without the license, but the license must be installed before you can successfully start…
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…
Restrictions
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Restrictions
Included below are restrictions associated with DataKeeper and DataKeeper Cluster Edition as well as possible workarounds and/or solutions. __________________________________________________________________________________________________________________ Bitlocker…
Installation
NO TOC » DataKeeper Cluster Edition Installation Guide » Installation
Once you have downloaded the DataKeeper Cluster Edition software, the topics that follow explain the installation process. Core Software Installing Core Third Party Product Files Application Directory Anomaly Localized Language Supplement Silent…
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…
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…
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…
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…
Network Disconnect
SIOS DataKeeper for Windows Technical Documentation » FAQs » Network Disconnect
Scenario #1 In a 2-Node, non-clustering configuration (1×1) replicating a 100TB volume between Source server and Target server over a WAN connection, the network goes down for twenty minutes. Question In this scenario, what would happen to the Mirror State with…
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…
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…
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.…
One-to-Many (Multiple Targets)
SIOS DataKeeper for Windows Technical Documentation » User Guide » Getting Started » One-to-Many (Multiple Targets)
This configuration involves one primary (source) system replicating one (or more) volume(s) to two different target systems across the network. This is referred to as a multiple target configuration. Note that there are two mirrors that are completely independent…
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…
Configuration
SIOS DataKeeper for Windows Technical Documentation » Configuration
Requirements/Considerations The topics in this section identify several prerequisites to be aware of before implementing your DataKeeper…
AWS Issues and Workarounds
SIOS DataKeeper for Windows Technical Documentation » FAQs » AWS Issues and Workarounds
Question What is the best practice for shutting down clustered VMs in AWS? Answer If shutting down the primary source node, all cluster roles depending on a SIOS DataKeeper Volume Resource should be placed in the Offline state. Also make sure all mirrors are in the…
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…
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…
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…
User Interface
NO TOC » DataKeeper Cluster Edition Technical Documentation » SIOS DataKeeper Cluster Edition Introduction » User Interface
SIOS DataKeeper User Interface The SIOS DataKeeper User Interface uses a standard MMC snap-in interface. The left pane displays the Console Tree view. This includes the Jobs and Reports. Currently, there are two reports available – Job Overview and Server…
User Interface
SIOS DataKeeper for Windows Technical Documentation » Introduction » User Interface
SIOS DataKeeper User Interface The SIOS DataKeeper User Interface uses a standard MMC snap-in interface. The left pane displays the Console Tree view. This includes the Jobs and Reports. Currently, there are two reports available – Job Overview and…
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…
Switchover and Failover with Multiple Targets
SIOS DataKeeper for Windows Technical Documentation » User Guide » Configuring Mirrors » Switchover and Failover with Multiple Targets
In a multiple target configuration, it is important to understand how DataKeeper mirrors will work in the following scenarios: Manual switchover to a target server Source server failure followed by a manual switchover to a target server Example: In the…
User Interface – Shows Only One Side of the Mirror
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » User Interface – Shows Only One Side of the Mirror
If the SIOS DataKeeper UI shows a volume as a source and its corresponding target as available or a volume as a target with the corresponding source volume as available, you can use the command line utility to force an update to the SIOS DataKeeper GUI or delete the…
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…
Components
NO TOC » DataKeeper Cluster Edition Technical Documentation » SIOS DataKeeper Cluster Edition Introduction » Components
DataKeeper Components SIOS DataKeeper for Windows is comprised of the following components: DataKeeper Driver (ExtMirr.sys) – The DataKeeper Driver is a kernel mode driver and is responsible for all mirroring activity between the mirror…
Setup
SIOS DataKeeper for Windows Technical Documentation » User Guide » Setup
Setting Up SIOS DataKeeper Follow these steps to start using SIOS DataKeeper: Connect to the servers you wish to configure for replication. You can select Connect to Server from the Action pull down menu, right-click on the job folder in the left panel tree…
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:…
Using Disk Management
SIOS DataKeeper for Windows Technical Documentation » Administration » Using Disk Management
When using the Windows Disk Management utility to access SIOS DataKeeper volumes, please note the following: Using Disk Management to delete partitions that are being mirrored is not supported. Deleting a partition that is part of a SIOS DataKeeper mirror will yield…
Network Adapter Settings
SIOS DataKeeper for Windows Technical Documentation » Configuration » Network Adapter Settings
DataKeeper requires that “File and Printer Sharing for Microsoft Networks” be enabled on the network interfaces to make a NAMED PIPE connection and be able to run DataKeeper’s command line tool (EMCMD). To test if you can make a Named Pipe connection,…
Break
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Break
Breaking a mirror is similar to the Pause and Unlock function. It suspends mirror operation and unlocks the target volume for read/write access. The difference is that the Break operation marks all bits in the DataKeeper Intent Log as dirty, which forces a full…
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…
Renaming a Job
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Renaming a Job
Select the job in the left Console Tree pane of the main DataKeeper window. You can select Rename Job from the Actions pane or right-click on the selected job and choose Rename Job from the menu that displays. Enter the new Job Name and new Job…
Deleting a Job
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Jobs » Deleting a Job
Select the job in the left Console Tree pane of the main DataKeeper window. You can select Delete Job from the Actions pane or right-click on the selected job and choose Delete Job from the menu that displays. Select Yes to delete the selected job and…
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…
Event Log Considerations
SIOS DataKeeper for Windows Technical Documentation » Administration » Event Log Considerations
It is important that SIOS DataKeeper be able to write to the Event Log. You should ensure that the Event Log does not become full. One way to accomplish this is to set the Event Log to overwrite events as needed: Open the Event Log. Right-click on System Log…
Continue and Lock
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Continue and Lock
This action locks the volume on the target system and then resumes the mirroring process. While the mirror is paused, writes on the source system are recorded in the SIOS DataKeeper Intent Log. When the Continue and Lock operation occurs, these changed blocks –…
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…
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…
Installation of the iSCSI Target
SIOS DataKeeper for Windows Technical Documentation » User Guide » Using Microsoft iSCSI Target With DataKeeper on Windows 2012 » Installation of the iSCSI Target
From the Server Manager menu, select “Add Roles and Features” from the “Manage” drop-down. Select the “Role-based or feature-based installation” option. From the list of servers presented, select the appropriate server. On the…
Synchronous and Asynchronous Mirroring
SIOS DataKeeper for Windows Technical Documentation » Introduction » Understanding Replication » Synchronous and Asynchronous Mirroring
SIOS DataKeeper employs both asynchronous and synchronous mirroring schemes. Understanding the advantages and disadvantages between synchronous and asynchronous mirroring is essential to the correct operation of SIOS DataKeeper. Synchronous Mirroring With synchronous…
Initial Synchronization of Data Across the LAN or WAN
SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations » Initial Synchronization of Data Across the LAN or WAN
When replicating large amounts of data over a WAN link, it is desirable to avoid full resynchronizations which can consume large amounts of network bandwidth and time. DataKeeper avoids almost all full resyncs by using its bitmap technology. However, the initial…
Replacing a Target
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Replacing a Target
When replacing the target volume, you must either break the mirror or delete the mirror in order to ensure a full resync of the data from the source volume to the target volume when the target volume is back in place. Though similar to the Pause and Unlock, breaking…
Changing the Compression Level of an Existing Mirror
SIOS DataKeeper for Windows Technical Documentation » User Guide » Working With Mirrors » Changing the Compression Level of an Existing Mirror
The compression level of the mirror is set during mirror creation and applies to that specific mirror only. To change the compression level of an existing the mirror, edit the properties of the mirror from within the DataKeeper GUI. Select the mirror and click on…
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…
Error Messages Log
SIOS DataKeeper for Windows Technical Documentation » FAQs » Error Messages Log
Question Where does DataKeeper log error messages? Answer DataKeeper events are logged in the Windows Application Event Log and the Windows System Event Log. Here is a breakdown of the messages you can look for. Application Event Log: Source = ExtMirrSvc –…
Unable to Determine Previous Install Path
SIOS DataKeeper for Windows Technical Documentation » Troubleshooting » Known Issues and Workarounds » Unable to Determine Previous Install Path
Installation – Fatal Error: Unable to Determine Previous Install Path Error/Message Fatal Error: Unable to determine previous install path. DataKeeper cannot be uninstalled or reinstalled. Description When performing a “Repair” or…
Administration
SIOS DataKeeper for Windows Technical Documentation » Administration
The topics in this section provide detailed instructions for performing DataKeeper administration tasks. _____________________________________________________________________________________________________________________________________________________ DataKeeper…
Using the -proxy option with EMCMD
NO TOC » DataKeeper Cluster Edition Technical Documentation » Using the -proxy option with EMCMD
All EMCMD requests can be routed through a “proxy” DataKeeper service. To do this, append the options -proxy - to the end of the EMCMD command line. The should be given using the same format as the option. EMCMD will open a connection to the …
Sector Size
SIOS DataKeeper for Windows Technical Documentation » Configuration » Sector Size
Beginning with DataKeeper Version 7.2.1, disks with sector size not equal to 512 bytes are supported. However, DataKeeper requires that the mirror source volume be configured on disk(s) whose sector size is the same as the disk(s) where the mirror target is configured.…
DKSUPPORT
SIOS DataKeeper for Windows Technical Documentation » Administration » DKSUPPORT
DKSUPPORT .cmd, found in the \SUPPORT directory, is used to collect important configuration information and event log files and put them in a zip file. SIOS Support Engineers will commonly request this zip file as part of the support process. To run this utility,…
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…
Resize or Grow Mirrored Volumes
SIOS DataKeeper for Windows Technical Documentation » FAQs » Resize or Grow Mirrored Volumes
Question Can you resize or grow mirrored volumes? Answer Yes, beginning with Version 7.4, users can extend and shrink their DataKeeper volumes dynamically while retaining mirror settings. See DataKeeper Volume Resize for more information.
Bandwidth Throttle
SIOS DataKeeper for Windows Technical Documentation » Configuration » WAN Considerations » Bandwidth Throttle
DataKeeper attempts to utilize all of the available network bandwidth. If DataKeeper is sharing the available bandwidth with other applications, you may wish to limit the amount of bandwidth DataKeeper is allowed to use. DataKeeper includes a feature called Bandwidth…
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…
Awareness of Windows Filenames and Directory Names
SIOS DataKeeper for Windows Technical Documentation » FAQs » Awareness of Windows Filenames and Directory Names
Question Is SIOS DataKeeper aware of Windows filenames and directory names? Answer SIOS DataKeeper is implemented with a Windows kernel mode filter driver that sits above the physical disk driver but below the file system. As a result, the SIOS DataKeeper driver…
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…
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…
DKHEALTHCHECK
SIOS DataKeeper for Windows Technical Documentation » Administration » DKHEALTHCHECK
DKHealthCheck.exe, found in the \DKTools directory, is a tool that can provide basic mirror status and problem detection of mirror issues. SIOS Support may request that you run this tool as part of the Support process. Note: DKHEALTHCHECK output is captured by…
Data Transfer Network Protocols
SIOS DataKeeper for Windows Technical Documentation » FAQs » Data Transfer Network Protocols
Question What are the network protocols used for SIOS DataKeeper Data Transfer? Answer SIOS DataKeeper uses named pipe communication and TCP Sockets.
Introduction
SIOS DataKeeper for Windows Technical Documentation » Introduction
SIOS DataKeeper Overview SIOS DataKeeper is a highly optimized host-based replication solution which ensures your data is replicated as quickly and as efficiently as possible from your source server across the network to one or more target servers. Features Some…
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…
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…
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…
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 …
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…
UPDATEVOLUMEINFO
SIOS DataKeeper for Windows Technical Documentation » Administration » Using EMCMD with SIOS DataKeeper » UPDATEVOLUMEINFO
EMCMD UPDATEVOLUMEINFO This command causes the SIOS DataKeeper service to query the driver for the correct mirror state. This command is useful if the DataKeeper GUI displays information that appears to be incorrect or not up-to-date. Note: The SIOS DataKeeper…