Fujitsu ETERNUS CS800 S5, User Manual

Page: 262 / 634

OST Configuration
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U41840-J-Z125-7-76
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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 ETERNUS
CS800. 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.
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To configure the target ETERNUS CS800, see "Adding a Replication
Target" on page 234 .
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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:
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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.
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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
option (see "Deleting an LSU" on page 257 ).
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Specific Capacity - Select this option to specify the physical capacity of the LSU,
and then enter the following information.
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LSU Name - Enter the name of the LSU.
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Physical Capacity - Enter the physical capacity of the LSU (1 to 1048576 GB).
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Fujitsu 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.