Using the CLI
38
Modular Smart Array 1000/1500 cs Command Line Interface User Guide
Creating LUNs
A LUN is a logical storage unit comprised of one or more hard drives.
When a LUN is initially created, the LUN Unit ID is automatically set to the
number assigned to the LUN. If desired, this LUN ID name can be changed. See
“Assigning a Name or ID to a LUN” for procedural information.
The basic command is
ADD UNIT.
A variety of options are available to modify
the command.
Basic command
ADD UNIT
Command options
DATA=“DISKzzz”
—the number of an individual drive to incorporate into the
LUN. Disks are identified by box number and bay number. For example,
DISK110 identifies disk 10 in box number 1.
DATA=“DISKxxx-DISKyyy”
—a range of drives is to be incorporated into the
LUN. Disks are identified by box number and bay number. For example,
DISK101-DISK105 identifies disks 1 through 5 in box number 1.
Note:
Quotation marks must be entered both before and after the data disk drives that
are to be included in the LUN.
RAID_LEVEL=xxx
—the RAID fault-tolerance level to use, where
xxx
represents:
0
= RAID 0 (no fault tolerance)
1
= RAID 1 (mirroring)
5
= RAID 5 (distributed parity)
ADG
= Advanced Data Guarding (ADG)
Note:
If more than one pair of drives are included in a RAID 1 array, the data is
striped across the first half of the drives in the array and then each drive is mirrored to a
drive in the remaining half of the drives for fault tolerance. This method is referred to as
RAID 1+0.
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