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Bee Series by Synology
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Release Notes for Snapshot Replication

Snapshot Replication is an expert of data backup and recovery with the point-in-time copy mechanism. Businesses need data protection to prevent data loss from accidental deletion, application crashes, data corruption, and viruses.

Version: 7.4.6-1699

(2024-08-26)

Compatibility & Installation

  1. Snapshot Replication 7.4.6-1699 requires DSM 7.2.2 and above.

Fixed Issues

  1. Fixed an issue which could cause anomalies in shared folders with immutable snapshots after a switchover.

Version: 7.4.5-1698

(2023-09-26)

Fixed Issues

  1. Fixed a minor issue with immutable snapshots which occurred when a factory reset was performed.
  2. Fixed an issue where replication tasks for LUNs created on Btrfs volumes might be unable to complete or stop due to time-out.

Version: 7.4.4-1694

(2023-04-25)

What's New

  1. Supports replicating WriteOnce shared folders on specific models.
  2. Supports creating immutable snapshots based on the Write Once, Read Many (WORM) technology on specific models.
  3. Supports installing Snapshot Replication on Peta Volumes.

Fixed Issues

  1. Fixed an issue where snapshots could not be deleted properly.

Version: 7.4.2-1632

(2022-08-10)

Fixed Issues

  1. Fixed an issue where replicated shared folders on destination servers couldn't update properly when the system misidentified an ongoing Hyper Backup task.

Version: 7.0.3-0310

(2018-05-23)

What's New for DSM 6.2

  1. Introduces Advanced LUN, a Btrfs-based LUN type that creates and restores snapshots in seconds.
  2. Added the snapshot calculator to provide a graphical representation of storage consumption by snapshots in a given period of time.
  3. Encrypted shared folders now support clone and test failover.

Updated the maximum number of replication tasks

XS/XS Plus series

  • Maximum number of shared folder replication tasks: 64
  • Maximum number of iSCSI LUN replication tasks: 32
  • Maximum total number of replication tasks: 64

Plus series

  • Maximum number of shared folder replication tasks: 32
  • Maximum number of iSCSI LUN replication tasks: 16
  • Maximum total number of replication tasks: 32

Value series

  • Maximum number of shared folder replication tasks: 16
  • Maximum number of iSCSI LUN replication tasks: 8
  • Maximum total number of replication tasks: 16

Improvements & Fixed issues

  1. Increased replication speed when the tasks involve transmitting a large number of small files.
  2. Enhanced usability by adjusting setup procedure and troubleshooting messages.
  3. Fixed an issue where snapshots could not be deleted when the volume was full.
  4. Fixed an issue where local replication might fail after the destination shared folder was renamed.
  5. Fixed an issue where the system might fail to run multiple replication tasks at the same time.
  6. Thai user interface is now available.

Limitation

  1. Starting from DSM 6.2, the core replication function is centrally managed by a new package, Replication Service. Packages with replication feature, such as Snapshot Replication, must install Replication Service package.