Software Instruction Manual

Toolkit utilities 50
• Sectors (on page 51)
• Size (on page 51)
• SSPAdaptersWithAccess (on page 51)
• StripeSize (on page 51)
ArrayAccelerator
This option specifies whether the array accelerator is enabled or disabled for the specified logical drive.
The default value is Enabled.
LogicalDrive
The value that you enter for this option specifies the ID number of the logical drive that is to be created or
modified. The first logical drive on an array must have an ID of 1 (not 0), and logical drive numbering
must be contiguous.
• In Configure action mode, ACU accepts only the ID number of the next possible logical drive.
• In Reconfigure action mode, ACU also accepts the ID number of any existing logical drive.
LogicalDriveSSPState
This option is valid only for controllers that enable SSP on a logical drive basis. Other controllers that
support SSP use the SSPState option ("SSPState" on page 47).
The following defaults apply:
• For new logical drives, the default value is Disabled.
• For existing logical drives, the default value is the current logical drive setting.
ParityGroups
When you create a RAID 50 or RAID 60 configuration, you must also set the number of parity groups.
You can use any integer value greater than 1 for this setting, with the restriction that the total number of
physical drives in the array must be exactly divisible by the number of parity groups.
The maximum number of parity groups possible for a particular number of physical drives is the total
number of drives divided by the minimum number of drives necessary for that RAID level (three for RAID
50, four for RAID 60).
PreferredPath
If you select the Manual setting for PreferredPathMode (on page 46), use the PreferredPath
command to specify the path for I/O to the logical drive on a redundant controller in active/active mode.
The default setting for this option is 1. With this setting, the controller in chassis slot 1 is the preferred
controller for I/O to the logical drive. If you select 2, the controller in chassis slot 2 becomes the preferred
controller for the logical drive.
To determine the chassis slot numbers, use the show command on a controller that supports redundant
controllers.