Accusys ExaSAN User Manual page 41

4. Select initialization mode in either On-the-fly initialization or Performance evaluation.
On-the-fly initialization – ExaSAN RAID systems
record the initialized sectors in the bitmap. All sectors
are initialized only once. The entire initialization
process will be completed faster and the
performance will be better during the initialization.
During on-the-fly initialization, 65-75% of the full
speed (of a created RAID) is still available. You can
still use the RAID system during the RAID
initialization.
Select this option (default) to ensure the
completeness of the array. If this option is selected, it
will recalculate the disk parity and data organization
(how it is arranged). The amount of time required for
the initialization process varies depending on the disk
volume.
Performance evaluation – Select to evaluate the performance of the target array. Data and
parity are not initialized. (No data protection when this mode is on).
Note
For on-the-fly option, you are able to access the array volume during
initialization. However, the RAID performance of the array will be
slightly lower than usual before the initialization is complete.
5. Assign LUN automatically. Once check this box, array will automatically assign a LUN. If
there are multiple slices, you may choose to assign LUN manually under Option.
6. Click Create Array to complete the process. You can check the initial status in below page.
User Guide
5. RAID