Software Instruction Manual

Toolkit utilities 51
RAID
The value that you enter for this option specifies the RAID level of the logical drive.
• When the Action mode is Configure, and the Method mode is Auto, ACU automatically selects the
highest RAID level that the controller and drive configuration can support except RAID 50 or RAID
60. To specify RAID 50 or 60 for a controller that supports either of these RAID levels, use the
Custom setting. In this case, you must also specify the number of parity groups ("ParityGroups" on
page 50).
• When the Action mode is Reconfigure, the default value is the existing RAID level for that logical
drive. If you specify a different RAID setting, then ACU either ignores the new setting (when Method
mode is Auto), or attempts to migrate the logical drive to the specified RAID level (when Method
mode is Custom).
Sectors
This option specifies the number of sectors that are to comprise each track. Enter 32 to disable MaxBoot
or 63 to enable it.
• For new logical drives, the default setting is 63 if the logical drive is larger than 502 GB. Otherwise,
the default setting is 32.
• For an existing logical drive, the default setting is the existing setting.
Logical drive performance is likely to decrease with MaxBoot enabled.
Size
Enter the capacity that you want the logical drive to have, in megabytes. The default size setting for new
logical drives is MAX. In this case, ACU creates a logical drive of the maximum possible size from the
physical drives that you assigned to the array.
In Reconfigure mode, the default setting is the existing size of the logical drive. If you enter a larger value,
ACU extends the logical drive to the new size if there is unused drive capacity on the same array, as long
as the operating system supports logical drive extension. You cannot reduce the size of the logical drive.
CAUTION: Back up all data before extending a logical drive.
SSPAdaptersWithAccess
Enter values here to identify the SSP adapters that you want to have access to a logical drive. The values
are processed only if either SSPState or LogicalDriveSSPState is set to Enable. Otherwise, the values are
ignored.
NOTE: Be sure that every HBA in the system has access to the logical drives for which multi-
path will be used.
StripeSize
You can enter a numerical value for this option to specify the size of the data stripes (in kilobytes), or you
can leave this option blank and allow ACU to use a default value.
The valid stripe size values depend on the RAID level.