HA, DR, and HA+DR Release Notes

High Availability Deployment Framework Upgrades

HA

Upgraded SIOS from v8.x to v10.x, introducing a modern GUI and adding support for Windows Server 2025 and SQL Server 2022.

This issue also fixes an issue with the T: drive being incorrectly created as a Volume ResTag during installation.

Legacy installers remain required to manually install for Windows Server 2016–2019.

SIOS v10 is not supported on pre‑Windows Server 2016 platforms.

ENG-52226

DR, HA+DR

An issue that was causing alarms to duplicate in certain situations during patches or reboots has been resolved.

ENG-54514

DR, HA+DR

An issue with Service Registry Key Value imports timing out because the Service Registry did not fully initialize after a restart has been resolved by adding more time for the import to take place.

ENG-57634

DR

The DR_ServiceControl script has been updated to utilize the correct ARM path in both Disaster Recovery (DR) and High Availability + Disaster Recovery (HA+DR) deployments.

ENG-61042

HA

An issue that was causing the HA install script to fail in certain situations has been resolved by normalizing case handling, meaning the script no longer requires case sensitivity to run properly.

ENG-61198

DR

An issue with Disaster Recovery (DR) Setup handling for single and multiple failover IP scenarios has been resolved.

ENG-62808

DR

The DR_ServiceControl script has been updated to remove Metrics Collection, allowing the primary and secondary host to both report Metrics information.

ENG-63276

DR

An issue where Disaster Recovery monitoring could incorrectly assign cluster resources to multiple nodes during failover, resulting in repeated GroupCheck errors, has been resolved.

ENG-78451

DR

An issue where DR Monitor could incorrectly initiate a forced failover in certain situations, even after the user explicitly selected "No" and "Exit," has been resolved.

ENG-81162

HA, DR, HA+DR

The High Availability (HA), Disaster Recovery (DR), and HA+DR installers have all received a refresh to match current company branding.

ENG-81166

DR

The Disaster Recovery (DR) installation script has been updated to correctly execute a scheduled task on modern operating systems.

ENG-81167

DR

The Disaster Recovery (DR) setup script has been updated to correctly validate the path to the “DR Status” shortcut depending on which SQL version is installed.

ENG-81169

HA+DR

An issue that would cause the API Gateway to stop in certain situations during HA failover has been resolved.

ENG-83361

DR

An issue with the Disaster Recovery (DR) installation process in which attempting to create clusters could throw error messages and stop the installation from completing in certain situations has been resolved.

ENG-85421

DR

An issue that was causing DR startup scripts to fail in certain situations during reboots due to elevated User Account Control settings has been resolved.

ENG-86345

DR

An issue where the DR Login Propagation Job Validation step would remain in a permanent failure state in certain situations after a temporary error has been resolved.

ENG-88323

DR

Improved DR login propagation visibility by introducing a troubleshooting mechanism, delivered as a stored procedure in the master database, to verify login synchronization between Primary and DR sites.

ENG-88816

HA+DR

An issue where the DR Service Control script could fail on a passive DR node in certain situations by attempting to start a SQL Agent job has been resolved.

ENG-52241

N/A

Disaster Recovery

Description: In Disaster Recovery Environments, LR SQL connections can timeout when using Windows Auth and Shared IP.

Details: This issue is being caused by Windows Auth services attempting to perform Kerberos authentication with a connection string which does not have a valid SPN failing. On failover, the DR Failover IP is forcefully registered in Consul Keyspace. This is intentional and working as intended by Windows Auth.

Workaround: Register SPN for the DR Failover IP in the active directory, or change the “EMDB Server” in Configuration Manager to a DNS name following any failover/back event.

ENG-61255

N/A

High Availability

Description: Enabling the “Force randomization for images (Mandatory ASLR)” option in the environment results in the LifeKeeper GUI failing to load and outputting several error messages.

Details: Due to the way the SIOS software is compiled, enabling this option renders the LifeKeeper GUI unable to load. Because this is not an issue with the LogRhythm software, we are unable to address this issue.

Workaround: Disable the “Force randomization” setting in environments with LifeKeeper. There is a new web-based UI version of SIOS releasing in 2026 that may resolve this issue.

ENG-49867

Disaster Recovery

Reboots required during DR installations now correctly continue the installation process rather than throwing a PowerShell error.

ENG-50668

High Availability

An issue with installer pathing during a silent HA install/upgrade has been resolved.

ENG-52380

Disaster Recovery

An issue with re-running the DR installer causing error messages during SQL Check jobs has been resolved.