Quantum DXi4701, User Manual

Page: 147 / 440

Chapter 6: DXi4701 Replication
Performing Data Replication
Quantum DXi4701 User’s Guide 121
Caution: Cartridge barcodes for all source systems that are
replicating to the same target must be unique.
Note: To limit the amount of network bandwidth used for replication,
enable a constant throttle (see Enabling System Throttling on
page 256), or schedule replication throttling (see Scheduling
Replication Throttling on page 298).
Task Overview:
Recovering a Replicated
Share or Partition
If a NAS share or VTL partition is lost or damaged on the source system,
you can recover it on the target system using a received snapshot. When
you recover a share or partition, it is recreated on the target system just
as it was at the point in time when the snapshot was saved.
To recover a replicated share or partition:
1 On the target system, select a received snapshot and perform a
recover operation (see Recovering a Share on page 136 or
Recovering a Partition on page 149).
The share or partition is now available on the target system.
2 (Optional) Map your backup application to the recovered share or
partition on the target system to continue making backups.
3 When the source system is operating correctly again, choose one of
the following actions:
• Failback the share or partition to restore it on the original source
system (see Task Overview: Performing a Share or Partition
Failback on page 122). Then, if necessary, map your backup
application to the restored share or partition on the original
source system.
• Continue to make backups to the recovered share or partition
on the original target system. In addition, set up replication to
replicate the share or partition back to the original source
system (see Task Overview: Setting Up and Performing
Replication on page 118). In this scenario, the original source
system is now the target, and the original target system is now
the source.