Release Notes for Synology High Availability

Synology High Availability leverages the ability of two Synology NAS to maximize service uptime. With the cluster design, the active server is responsible for running all services and sync data to the passive server, which stands by and takes over the services when the active server becomes unavailable.

Version: 2.1.4-1581

(2023-09-26)

Important Note

  1. Starting from this version, IP addresses for Heartbeat connections are automatically added to the auto block feature's allow list to ensure stable cluster connections.

Version: 2.1.4-1552

(2023-05-22)

Compatibility & Installation

  1. Synology High Availability 2.1.4-1552 requires DSM 7.2 and above.

Version: 2.1.4-1533

(2023-04-25)

Compatibility & Installation

  1. Synology High Availability 2.1.4-1533 requires DSM 7.2 and above.

Version: 2.1.3-1431

(2022-09-05)

What's New

  1. Enhanced the system stability during DSM update.

Fixed Issues

  1. Minor bug fixes.

Version: 2.1.3-1420

(2022-08-10)

What's New

  1. Enhanced the system stability during DSM update.

Fixed Issues

  1. Minor bug fixes.

Version: 2.1.2-1380

(2022-04-06)

What's New

  1. Updated to be compatible with DSM 7.1.

Fixed Issues

  1. Fixed an issue where updating DSM on SA3200D might remove the network settings of the cluster.
  2. Minor bug fixes.

Version: 2.1.2-1377

(2022-03-24)

What's New

  1. Updated to be compatible with DSM 7.1.

Fixed Issues

  1. Fixed an issue where updating DSM might fail when any of the servers in the cluster had been migrated.
  2. Minor bug fixes.

Version: 2.1.2-1367

(2022-02-17)

What's New

  1. Integrates the Storage page into Storage Manager for a more comprehensive storage space management experience.
  2. Added support for changing the cluster or Heartbeat interfaces without removing and recreating the cluster.
  3. Added support for repairing the degraded storage pool on the passive server with the hot spare drives on the passive server.

Version: 2.1.1-1279

(2021-10-26)

Important Note

  1. The update is expected to be available in all regions within the next few days. The actual time of release may vary slightly depending on the region.

What's New

  1. Added support for models with 16 network interfaces at most.

Version: 2.1.0-1229

(2021-06-29)

Compatibility and Installation

  1. Updated to be compatible with DSM 7.0.

Version: 2.1.0-1224

(2021-06-01)

Compatibility and Installation

  1. Updated to be compatible with DSM 7.0.

What's New

  1. Optimized the DSM update process and added update options to reduce system downtime by up to 80% during DSM updates.
  2. Enhanced the failover/switchover mechanism and reduced the completion time by up to 30%.
  3. Supports updating Synology High Availability without interrupting services.
  4. Optimized the data synchronization mechanism to provide faster synchronization between the active and the passive servers.
  5. Supports configuring separate UPS on both active and passive servers to maximize service availability.

Version: 2.0.8-0579

(2021-03-22)

Bug Fixes

  1. Fixed an issue where the system might incorrectly display "volume crash" on the passive server when the passive server is rebooted.

Version: 2.0.7-0578

(2021-03-09)

What’s New

  1. Updated to be compatible with DSM 6.2.4-25556.

Version: 2.0.6-0575

(2021-02-23)

Important Note

This update is expected to be available in all regions within the next few days. The actual time of release may vary slightly depending on regions.

What's New

  1. Supports scheduled S.M.A.R.T. test for passive servers.

Fixed Issues

  1. Fixed an issue where the volume size of high-availability clusters might not be expanded after new drives were added.

Version: 2.0.5-0549

(2020-11-10)

Important Note

  1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

What’s New

  1. Integrated the native shutdown command of the SAS HDDs/SSDs to enhance the stability of these drives when the system shuts down.
  2. Optimized the system's log writing mechanism to the SATA DOMs.

Version: 2.0.4-0532

(2020-09-24)

Bug fixed

  1. Fixed an issue where the system might falsely report that a hot spare drive on the passive server is missing during system update.

Version: 2.0.4-0531

(2020-04-16)

Bug fixed

  1. Fixed an issue where the passive server could falsely report storage status when encountering an improper shutdown after storage being repaired.
  2. Fixed an issue where the hostname between HA cluster Hostname and one of the Synology NAS cannot be identical.

Version: 2.0.3-0140

(2019-10-29)

What's New

  1. Supports service monitoring for Synology Directory Server, which enables the system to perform a failover if this service becomes unavailable (requires Synology Directory Server 4.4.5-0093 or above).
  2. Added compatibility with Virtual Machine Manager (requires Virtual Machine Manager 2.5.0-9432 or above).

Bug Fixes

  1. Fixed an issue where recently added accounts or groups might be deleted under certain conditions after an auto-failover or switchover.
  2. Minor bug fixes.

Version: 2.0.2-0124

(2019-07-04)
  1. Supports modifying the network settings of both active server and passive server in a high-availability cluster without removing the cluster.
  2. Supports retrieving configuration and status information of a high-availability cluster via SNMP.
  3. Supports cluster reboot for Synology NAS models that do not support Wake on LAN.
  4. Enhanced the transfer speed of initial storage synchronization after cluster creation.

Version: 2.0.1-0099

(2018-08-29)
  1. High-availability cluster now supports Disk Lifespan Warning on the passive server.
  2. Fixed an issue where the passive server may not function properly after being rebooted from UPS Safe Mode.
  3. Enhanced high-availability cluster stability.

Version: 2.0.0-0094

(2018-05-23)
  1. High Availability Manager has been modularized into a package to ensure better system maintenance and updated flexibility.
  2. The new system update design now eliminates unnecessary system reboots on important updates while keeping your cluster secure but also maintain high service availability.
  3. The new design gives SHA the ability to more effectively handle situations especially when the servers are in a vulnerable state.
  4. A simpler yet more intuitive user interface,  offering you a comprehensive cluster overview and management.
  5. The new interface design provides more detailed and visual information as well as easy-to-follow solutions.
  6. A new monitor tool is introduced to display more details of both active server and passive server, giving you an in-depth system utilization overview.
  7. You can now choose to only replicate system configuration in the initial SHA cluster creation, providing a much more speedy cluster setup.

Version: 2.0.0-0090

(2018-05-08)
  1. Upgraded to be compatible with DSM 6.2 RC
  2. Minor bug fixes

Version: 2.1.4-1581

(2023-09-26)

Important Note

  1. Starting from this version, IP addresses for Heartbeat connections are automatically added to the auto block feature's allow list to ensure stable cluster connections.

Version: 2.1.4-1552

(2023-05-22)

Compatibility & Installation

  1. Synology High Availability 2.1.4-1552 requires DSM 7.2 and above.

Version: 2.1.4-1533

(2023-04-25)

Compatibility & Installation

  1. Synology High Availability 2.1.4-1533 requires DSM 7.2 and above.

Version: 2.1.3-1431

(2022-09-05)

What's New

  1. Enhanced the system stability during DSM update.

Fixed Issues

  1. Minor bug fixes.

Version: 2.1.3-1420

(2022-08-10)

What's New

  1. Enhanced the system stability during DSM update.

Fixed Issues

  1. Minor bug fixes.

Version: 2.1.2-1380

(2022-04-06)

What's New

  1. Updated to be compatible with DSM 7.1.

Fixed Issues

  1. Fixed an issue where updating DSM on SA3200D might remove the network settings of the cluster.
  2. Minor bug fixes.

Version: 2.1.2-1377

(2022-03-24)

What's New

  1. Updated to be compatible with DSM 7.1.

Fixed Issues

  1. Fixed an issue where updating DSM might fail when any of the servers in the cluster had been migrated.
  2. Minor bug fixes.

Version: 2.1.2-1367

(2022-02-17)

What's New

  1. Integrates the Storage page into Storage Manager for a more comprehensive storage space management experience.
  2. Added support for changing the cluster or Heartbeat interfaces without removing and recreating the cluster.
  3. Added support for repairing the degraded storage pool on the passive server with the hot spare drives on the passive server.

Version: 2.1.1-1279

(2021-10-26)

Important Note

  1. The update is expected to be available in all regions within the next few days. The actual time of release may vary slightly depending on the region.

What's New

  1. Added support for models with 16 network interfaces at most.

Version: 2.1.0-1229

(2021-06-29)

Compatibility and Installation

  1. Updated to be compatible with DSM 7.0.

Version: 2.1.0-1224

(2021-06-01)

Compatibility and Installation

  1. Updated to be compatible with DSM 7.0.

What's New

  1. Optimized the DSM update process and added update options to reduce system downtime by up to 80% during DSM updates.
  2. Enhanced the failover/switchover mechanism and reduced the completion time by up to 30%.
  3. Supports updating Synology High Availability without interrupting services.
  4. Optimized the data synchronization mechanism to provide faster synchronization between the active and the passive servers.
  5. Supports configuring separate UPS on both active and passive servers to maximize service availability.

Version: 2.0.8-0579

(2021-03-22)

Bug Fixes

  1. Fixed an issue where the system might incorrectly display "volume crash" on the passive server when the passive server is rebooted.

Version: 2.0.7-0578

(2021-03-09)

What’s New

  1. Updated to be compatible with DSM 6.2.4-25556.

Version: 2.0.6-0575

(2021-02-23)

Important Note

This update is expected to be available in all regions within the next few days. The actual time of release may vary slightly depending on regions.

What's New

  1. Supports scheduled S.M.A.R.T. test for passive servers.

Fixed Issues

  1. Fixed an issue where the volume size of high-availability clusters might not be expanded after new drives were added.

Version: 2.0.5-0549

(2020-11-10)

Important Note

  1. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.

What’s New

  1. Integrated the native shutdown command of the SAS HDDs/SSDs to enhance the stability of these drives when the system shuts down.
  2. Optimized the system's log writing mechanism to the SATA DOMs.

Version: 2.0.4-0532

(2020-09-24)

Bug fixed

  1. Fixed an issue where the system might falsely report that a hot spare drive on the passive server is missing during system update.

Version: 2.0.4-0531

(2020-04-16)

Bug fixed

  1. Fixed an issue where the passive server could falsely report storage status when encountering an improper shutdown after storage being repaired.
  2. Fixed an issue where the hostname between HA cluster Hostname and one of the Synology NAS cannot be identical.

Version: 2.0.3-0140

(2019-10-29)

What's New

  1. Supports service monitoring for Synology Directory Server, which enables the system to perform a failover if this service becomes unavailable (requires Synology Directory Server 4.4.5-0093 or above).
  2. Added compatibility with Virtual Machine Manager (requires Virtual Machine Manager 2.5.0-9432 or above).

Bug Fixes

  1. Fixed an issue where recently added accounts or groups might be deleted under certain conditions after an auto-failover or switchover.
  2. Minor bug fixes.

Version: 2.0.2-0124

(2019-07-04)
  1. Supports modifying the network settings of both active server and passive server in a high-availability cluster without removing the cluster.
  2. Supports retrieving configuration and status information of a high-availability cluster via SNMP.
  3. Supports cluster reboot for Synology NAS models that do not support Wake on LAN.
  4. Enhanced the transfer speed of initial storage synchronization after cluster creation.

Version: 2.0.1-0099

(2018-08-29)
  1. High-availability cluster now supports Disk Lifespan Warning on the passive server.
  2. Fixed an issue where the passive server may not function properly after being rebooted from UPS Safe Mode.
  3. Enhanced high-availability cluster stability.

Version: 2.0.0-0094

(2018-05-23)
  1. High Availability Manager has been modularized into a package to ensure better system maintenance and updated flexibility.
  2. The new system update design now eliminates unnecessary system reboots on important updates while keeping your cluster secure but also maintain high service availability.
  3. The new design gives SHA the ability to more effectively handle situations especially when the servers are in a vulnerable state.
  4. A simpler yet more intuitive user interface,  offering you a comprehensive cluster overview and management.
  5. The new interface design provides more detailed and visual information as well as easy-to-follow solutions.
  6. A new monitor tool is introduced to display more details of both active server and passive server, giving you an in-depth system utilization overview.
  7. You can now choose to only replicate system configuration in the initial SHA cluster creation, providing a much more speedy cluster setup.

Version: 2.0.0-0090

(2018-05-08)
  1. Upgraded to be compatible with DSM 6.2 RC
  2. Minor bug fixes