Snapshot Replication
Snapshot Replication is an expert of data backup and recovery. Businesses need data protection to prevent data loss from accidental deletion, application crashes, data corruption, and viruses.
Note:
- The snapshot feature is a point-in-time copy stored in the same volume used to record the whole data status at the time upon being taken. Snapshots use only a small amount of additional storage space, and do not have a performance impact. With the snapshots, if a user accidentally modifies or deletes data on a volume with snapshots, you are able to quickly restore the data back to the previous time at which the snapshot was taken. In addition, it allows users to recover their own deleted or modified files without assistance from the administrator.
- The replication feature is a mechanism to sync the taken snapshots between the sources and destinations. If the replication source fails to run normal service, you can perform a failover and protect your data with the replicated snapshots.
Snapshot Replication helps you manage and monitor the snapshots and replication tasks on your Synology Unified Controller.
Depending on the functions supported by your Synology Unified Controller, Snapshot Replication helps you accomplish the following tasks:
- Take and manage snapshots of iSCSI LUNs.
- Configure scheduled snapshots and retention settings. These settings will determine when and how the snapshots should be taken, retained, or removed.
- Create and manage replication tasks for iSCSI LUNs.
- Configure scheduled replication to periodically run the syncing for your replication tasks.
- Restore data from snapshots, and perform failover/switchover of replication tasks between the source and destination.
- View the logs of the events related to snapshots and replications.
Note:
- Snapshot Replication has defined the limits of the following maximum numbers of retainable snapshots:
- 256 snapshots for each iSCSI LUN
- 4,096 snapshots in total in the system
For more information on the maximum snapshot number, please refer to the specifications of your purchased Synology Unified Controller models.