HP Linux Server Management Software - Manual (Page 50)

Toolkit utilities 50
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.
• For RAID 0, RAID 1, or RAID 1+0 arrays, you can enter any of the stripe size values listed in the sample
script.
• For RAID 5 arrays, the maximum stripe size in most cases is 256 KB, but old controller models are often
limited to 64 KB.
• For RAID 6 arrays, the maximum stripe size is either 64 KB or 256 KB, depending on the controller.
The default stripe size value depends on the action mode.
• In Configure action mode, the default value is determined by the RAID level that you specified earlier in
the script. (In some cases, it also depends on the ACU version, the controller model, and the controller
firmware version).
o For RAID 0, RAID 1, or RAID 1+0, the default value is 128 KB.
o For RAID 5, the default value is usually 64 KB, but on some controller models it is 16 KB or 128 KB.
o For RAID 6, the default value is usually 16 KB, but on some controller models it is 64 KB or 128 KB.