IBM System Storage DS4000, Hardware Manual

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Chapter 4. IBM System Storage DS planning and configuration
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To change an array’s RAID level, from the Storage Manager window, select the array,
right-click it, select Change

RAID Level, and then the desired RAID level, as shown in
Figure 4-103.
Figure 4-103 Changing RAID level
A confirmation message appears and informs you that the operation cannot be stopped until
it is complete. The data remains accessible during this operation, which might take a long
time. To check the progress status, select the logical drives in the array being modified,
right-click it, and then select Properties to display a progress bar for the operation.
4.10.4 Unconfiguring a storage subsystem and arrays
Storage Manager allows the storage subsystem or previously created arrays to be cleared if
required.
Clearing the storage subsystem completely removes the complete configuration of the
storage subsystem and data, bringing it back to the state when it was initially installed.
Information defining all arrays, logical drives, and hot spares are deleted. This feature can be
used to create a new configuration on a storage subsystem that already has a configuration
defined that is now redundant.
Clearing an array configuration clears logical drives and group configuration in
all
arrays and
leaves the remaining subsystem configuration intact.
Warning: In both cases (clearing the storage subsystem or array configuration), data loss
occurs. Ensure that a backup of the storage subsystem data as well as the storage
subsystem configuration profile is made before attempting these operations.