SIOS DataKeeper Cluster Edition

Release Notes

Version 10.1

Released July 29, 2026

Important!!

Read This Document Before Attempting To Install Or Use This Product!
This document contains last minute information that must be considered before, during and after installation.

Introduction

SIOS DataKeeper Cluster Edition is a highly optimized host-based replication solution which integrates seamlessly with Windows Server Failover Clustering. Features of Windows Server Failover Clustering such as cross-subnet failover and tunable heartbeat parameters make it easy for administrators to deploy geographically dispersed clusters. SIOS DataKeeper provides the data replication mechanism which extends both versions of Windows Clustering, allowing administrators to take advantage of these advanced features to support non-shared disk high availability configurations.

Once SIOS DataKeeper Cluster Edition is installed, a new storage class resource type called DataKeeper Volume is available. This new SIOS DataKeeper Volume resource can be used in place of the traditional Physical Disk shared storage resource to enable geographically dispersed clusters, also known as multi-site clusters.

What’s New in DataKeeper Cluster Edition v10.1

v10.1.0 New Features

Description
Log4net package upgraded to v3.3.1.

Bug Fixes

The following is a list of the latest bug fixes and enhancements.

v10.1.0 Bug Fixes

Bug	Description
PW-11874	Support split brain resolution to the original node after that node is rebooted.
PW-16303	Potential data corruption in a multi-node configuration with a failover, followed by a switchover to another node prior to splitbrain resolution.
PW-18258	Fixed an issue where DataKeeper installed in a directory with no-spaces and special characters failed to switchover as expected.

Security Updates

None.

DataKeeper Cluster Edition v10 Discontinued Features

v10.1.0 Discontinued Features

None.

DataKeeper Cluster Edition Requirements

*Important: When restoring a DataKeeper volume or recovering/restoring a new system(s) and its related DataKeeper Volumes from a backup or snapshot, it is required that a FULL RESYNC be forced via the DK GUI on all restored DataKeeper volumes. This must be done to ensure an identical replica of the data will reside on the Source(s) and Target(s).
The steps for forcing a FULL RESYNC are as follows:
• Launching the DataKeeper GUI
• Selecting the mirror(s)
• Choose Break Mirror
◦After the mirror(s) status reflects Broken, select Resync Mirror (this is a FULL Resync).

	Requirements
Server Components	See Certification Information for supported Operating Systems and Applications. All servers should run the same version of Windows and the same version of DataKeeper software. Make sure you verify the following settings prior to installing and configuring SIOS DataKeeper Cluster Edition. Follow Microsoft best practices for deploying geographically dispersed clusters, including changing the quorum mode majority node setting with a file share witness. DataKeeper Failover Cluster registration is automatic and occurs 60 seconds after the following events have occurred on each cluster node: A DataKeeper Cluster Edition license has been installed on each cluster node. The Windows server Failover Clustering feature has been installed on each server. A Windows server Cluster configuration has been formed. Hotfix – KB 951308 https://support.microsoft.com/en-us/help/951308 If protecting Hyper-V resources, Hotfix KB 958065 https://support.microsoft.com/en-us/help/958065 Contact Microsoft for a fix that will allow NICs to be added to a Virtual Machine after the VM has been placed into a Failover Cluster. (For more information, see Hyper-V Host Cluster Error.)
User Interface	See Certification Information MMC 3.0 – download from: https://download.cnet.com/Microsoft-Management-Console-3-0-for-Windows-XP-KB907265/3000-2206_4-10741230.html

Requirements

Server Components

See Certification Information for supported Operating Systems and Applications.

All servers should run the same version of Windows and the same version of DataKeeper software.

Make sure you verify the following settings prior to installing and configuring SIOS DataKeeper Cluster Edition.

Follow Microsoft best practices for deploying geographically dispersed clusters, including changing the quorum mode majority node setting with a file share witness.

DataKeeper Failover Cluster registration is automatic and occurs 60 seconds after the following events have occurred on each cluster node:

A DataKeeper Cluster Edition license has been installed on each cluster node.
The Windows server Failover Clustering feature has been installed on each server.
A Windows server Cluster configuration has been formed.

Hotfix – KB 951308

https://support.microsoft.com/en-us/help/951308

If protecting Hyper-V resources, Hotfix KB 958065
https://support.microsoft.com/en-us/help/958065

Contact Microsoft for a fix that will allow NICs to be added to a Virtual Machine after the VM has been placed into a Failover Cluster. (For more information, see Hyper-V Host Cluster Error.)

User Interface

See Certification Information

MMC 3.0 – download from:
https://download.cnet.com/Microsoft-Management-Console-3-0-for-Windows-XP-KB907265/3000-2206_4-10741230.html

DataKeeper System Requirements

	Minimum Requirements
Memory	1 GB RAM
Processor	Refer to Windows Server Processor Requirements
Disk size	53 MB required for install

Local Security Policy Requirement

If your Windows servers are not in a domain and you are going to run the DataKeeper Service as the local system account, the Local Security policy setting “Network Access: Let Everyone permissions apply to anonymous users” must be enabled.

DataKeeper Cluster Edition Quick Start Guide

To get started using SIOS DataKeeper Cluster Edition, refer to the DataKeeper Cluster Edition Quick Start Guide.

Technical Support

As a SIOS Technology Corp. customer with a valid Support contract, you are entitled to access the SIOS Technology Corp. Support Self-Service Portal.

The SIOS Technology Corp. Support Self-Service Portal offers you the following capabilities:

Search our Solution Knowledge Base to find solutions to problems and answers to questions

Always on 24/7 service with the SIOS Technology Corp. Support team to:
- Log a Case to report new incidents.
- View Cases to see all of your open and closed incidents.
- Review Top Solutions providing information on the most popular problem resolutions being viewed by our customers.

Contact SIOS Technology Corp. Support at support@us.sios.com to set up and activate your Self-Service Portal account.

Contacting Support during Business Hours:

Please call if you have a critical issue involving a down production system or application where your data cannot be accessed using the SIOS Technology products.

1-877-457-5113 (Toll Free)

1-803-808-4270 (International)

For any other issues or questions, please open a case by logging into the Self Service Portal or sending an email to support@us.sios.com.

For After Hours Support For Critical Issues:

Outside of business hours and on the weekends, emergency support with guaranteed two-hour response time 24 hours per day, 7 days per week, 365 days per year is included under Product Support. After hours Support is only available for critical issues involving a down production system or application where your data cannot be accessed using the SIOS Technology products. These issues are handled by contacting the numbers below. Please note that emails to support@us.sios.com are not monitored outside of business hours and on the weekends. Non-critical issues are handled during business hours.