Quantum DXi6900 User Manual page 143

Chapter 6: Replication
Replication Send
Replicating a Share or Partition
Replicate a NAS share or VTL partition to send a snapshot of the share or partition to the target systems. A
snapshot is required to recover the data on the targets at a later time. If you have not configured a replication
schedule for a share or partition, replication only occurs when you manually initiate it (see ).
Caution: Do not replicate a partition containing media in an Exported state.
To replicate a share or partition:
1. Select the share or partition to replicate.
If multiple targets are configured, click the arrow next to the share or partition to display all targets, and
then select the desired target.
2. Click Replicate Now.
The status of the replication job displays in the Job Status column.
To cancel the replication job, select the share or partition and click Abort.
Synchronizing a Share or Partition
Synchronize a NAS share or VTL partition to synchronize its contents with the corresponding share or
partition on the target systems. To synchronize a share or partition, it must be configured for Directory/File or
Cartridge Based Replication (see
Synchronizing a share or partition ensures that the contents of the source share or partition are the same as
the target share or partition. The synchronization verifies that the same files or cartridges exist in both
locations, and that no additional files or cartridges exist in either location.
You should perform a synchronization in any of the following situations:
When Directory/File or Cartridge Based Replication is first enabled for a share or partition.
l
If a Directory/File or Cartridge Based Replication job fails.
l
If Directory/File or Cartridge Based Replication is disabled for a time and then is re-enabled.
l
Manually performing a synchronization is not necessary except in the cases described above. When
synchronization is manually initiated for a share or partition, the replication queue for that share or partition is
cleared. All file write and delete requests are queued after the synchronization, and they are not processed
until the synchronization is complete. This can cause replication to appear to be slow, especially for a share
or partition that is frequently accessed.
Caution: Before synchronizing a share or partition, make sure all media are unmounted and there are
no active backup jobs to the share or partition. (After the synchronization reaches the Replicating
state, backup jobs are allowed.)
Note: Even when replication is paused, the system continues to queue Directory/File or Cartridge
Based Replication operations. Each time an operation is queued, the system logs an administration
alert that reports the total number of queued Directory/File or Cartridge Based Replication requests.
Quantum DXi6900 User's Guide
Configuring Directory/File or Cartridge Based Replication on page 141).
143