1. Oracle ZFS Storage Appliance Administration Guide, Release OS8.8.x
  2. Remote Replication
  3. Remote Replication Concepts
  4. Target Replica Backups

Target Replica Backups

You can back up target replica datasets (projects or shares) using the NDMP zfs backup type. Replica backup is enabled on the appliance by applying the deferred update "Support for NDMP zfs-type Replica Backup." The replica backup feature chooses the most recent system-generated snapshot to be backed up, unless you specify a user-generated (non .rr extension) snapshot. For more information, see Replica Backups.

Some older replication snapshots, those originally preserved for future incremental backups, might not be needed and can be deleted. If the snapshot is held by NDMP, a confirmation is displayed warning of the potential impact to ongoing or future NDMP backups.

The following sequence of events causes a replication failure and generates an alert. For information about recovering from this error, see "Name collision" in Replication Failures.

  1. A replica snapshot is held by NDMP on the replication target (for an ongoing backup or a future incremental backup).

  2. The corresponding snapshot on the source appliance is deleted or renamed.

  3. A new snapshot is created on the source appliance with the same name as the replica snapshot held on the replication target.

  4. A replication update is attempted.