Recovering A Source Appliance (Virtual Tape Devices) - HPE StoreOnce 6500 User Manual

NOTE: If unable to colocate the Target Appliance on the same LAN as the Source Appliance to
improve replication performance, relocate the Target Appliance to the target site as soon as the
cartridges are synchronized.
NOTE: VTLs configured as non-deduplicating can replicate to both deduplicating and non-
deduplicating target libraries. For example, this can be useful to:
• Replicate data that does not deduplicate, such as compressed files.
• Replicate a copy of critical data needed for instant recovery.

Recovering a Source Appliance (Virtual Tape devices)

The Replication Recovery wizard allows administrator users to recover mapping configurations after a
disaster.
For example: the remote site has lost both the host servers and the StoreOnce System. New hardware
was purchased and installed, and the administrator now wants to recover data to the StoreOnce System
and then restore to the host server. Before the failure, a mapping existed between a Source Library on
the remote site StoreOnce System and a Target Library on the Data Center StoreOnce System. After the
failure, the Source Library is missing but the mapping may or may not still exist.
CAUTION: If you replace the disks in the source StoreOnce System and keep the original
appliance, the source to target mapping will still exist on the repaired StoreOnce System. You
MUST BREAK this mapping BEFORE carrying out recovery. If the mapping is left unbroken, the
now-blank Source Library (on the replacement disks) will overwrite the data on the Target Library,
effectively losing backup data on both Source and Target Libraries.
Procedure
1. Create a new non-replicating library on the Source Appliance (either by running the Installation wizard
or by using the Devices page).
2. Go to the Replication–VT Mappings page and select the new non-replicating library.
3. Click Start Recovery Wizard. At the Welcome screen, click Next.
4. At the Select Target Appliance Step, select Add the Target Appliance and provide the IP address of
the previous replication target device.
5. Select the existing Target Library, or the non-replicating library that was the Target Library before
mapping was broken, from which slots will be recovered.
TIP: Use the Click to show/hide details box to view further information about configured and
maximum shares, libraries, and mappings.
6. If the library is an existing Target Library, select the Slot Mapping that was configured and click Next. If
the mapping was broken and the source library reverted to non-replicating, you can add a new slot
mapping.
If the Target Library supports multiple library Fan In, the library may still be a Replication Target if other
mappings exist. Recover by adding the mapping back to map the unmapped slots to the new Source
Library.
68 Recovering a Source Appliance (Virtual Tape devices)