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Chapter 9: Configuration
OST Configuration
Quantum DXi4700 User’s Guide
238
Enable
Concurrent
Optimized
Duplication
Select the check box to enable optimized duplication during OST ingest.
Concurrent Optimized Duplication is disabled by default. If enabled, as data is written to the
storage server, it is simultaneously replicated to the target DXi. When optimized duplication
or Automatic Image Replication subsequently occurs, the operation is more efficient
because a portion of the required data has already been replicated to the target storage
server.
Note:
To configure the target DXi, see
Adding a Replication Target on page 255
Note:
When Concurrent Optimized Duplication is enabled, all data on the storage
server is duplicated, not just the specified images.
3. Select the check box for each optimized duplication target you want to duplicate the storage server to.
When the storage server is duplicated, its data will be sent to all selected targets.
4. Under
Logical Storage Unit
, select the type of LSU to add to the new storage server:
Available
Capacity
(Recommended for best performance) Select this option to add an LSU that uses the available
capacity on the system.
You cannot add an available capacity LSU to a storage server that already contains an LSU.
Also, if you add an available capacity LSU to a storage server, you cannot add additional LSUs
to that same storage server.
Note:
After you add an LSU that uses the
Available Capacity
option, you cannot change
the LSU to use the
Specific Capacity
option. Instead, you must delete the LSU, then add
a new LSU and choose the
Specific Capacity
).
Specific
Capacity
Select this option to specify the physical capacity of the LSU, and then enter the following
information.
l
LSU Name
- Enter the name of the LSU.
l
Physical Capacity
- Enter the physical capacity of the LSU (1 to 1048576 GB).
Note:
Quantum recommends setting LSUs to maximum size (1048576 GB) because
spanning them on a backup is not possible.
5. (Optional) In the
Description
box, enter a brief description of the LSU.
6. (Optional) Select the
Enable Automatic Image Replication
check box to automatically replicate
(duplicate) data on the LSU to a remote LSU on another DXi.
Automatic Image Replication (AIR) is disabled by default. If enabled, data on an LSU is automatically
replicated to a remote LSU that resides on a DXi in a different NetBackup domain. The timing of the
duplication, as well as the backup images that are duplicated, are determined by the storage lifecycle
policies (SLPs) configured in NetBackup.
OST AIR requires NetBackup 7.1 or higher. For information about configuring NetBackup for
Automatic Image Replication, see the
DXi-Series NetBackup and Backup Exec OST Configuration
Guide
(6-67079).