IBM System Storage DS3000, Programming Manual

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create logicalDrive driveCount= numberOfDrives
raidLevel=(0 | 1 | 3 | 5 | 6) userLabel= logicalDriveName
[driveType=(fibre | SATA | SAS)]
[capacity=
logicalDriveCapacity | owner=(a | b) |
cacheReadPrefetch=(TRUE | FALSE) |
segmentSize=
segmentSizeValue ]
[enclosureLossProtect=(TRUE | FALSE)
securityType=(none | capable | enabled)]
This command is similar to the previous
create logicalDrive
command in which users assign the disk
drives. The difference between this command and the previous one is that this version of the command
requires only the number and the type of disk drives you want to use in the subsystem. You do not need
to enter a list of disk drives. All of the other parameters are the same. Enclosure loss protection is
performed differently when the Storage Manager software assigns the disk drives than when a user
assigns the disk drives. (For a description of the difference, see “Enclosure Loss Protection” on page 4-38.)
Example of Creating Logical Drives with Software Assigned Disk Drives
c:\...\...\client>smcli 123.45.67.89 -c “create logicalDrive driveCount=6
raidLevel=5 userLabel=\”Engineering_1\”
capacity=20GB owner=a cacheReadPrefetch=TRUE segmentSize=128 securityType=capable;”
The command in this example creates the same logical drive as the example for the previous create
logicalDrive command in which a user assigns the disk drives. The difference is that a user does not
know which disk drives are assigned to this subsystem.
Creating Logical Drives in an Existing subsystem
If you want to add a new logical drive to an existing subsystem, use this command:
create logicalDrive subsystem= subsystemNumber
userLabel= logicalDriveName
[freeCapacityArea= freeCapacityIndexNumber |
capacity= logicalDriveCapacity | owner=(a | b) |
cacheReadPrefetch=(TRUE | FALSE) |
segmentSize=
segmentSizeValue
securityType=(none | capable | enabled)T10PI=(none|enabled)]
Note: Parameters wrapped in square brackets or curly brackets are optional. You can use one or all of the
optional parameters as needed to define your configuration. If you choose not to use any of the optional
parameters, the default values of the parameter are provided for your configuration.
The
subsystem
parameter is the number of the subsystem in which you want to create a new logical
drive. If you do not know the subsystem numbers on the storage subsystem, you can use the
show
allLogicalDrives summary
command to get a list of the logical drives and the subsystems to which the
logical drives belong.
The
userLabel
parameter is the name that you want to give to the logical drive. The logical drive name
can be any combination of alphanumeric characters, hyphens, and underscores. The maximum length of
the logical drive name is 30 characters. You must enclose the logical drive name with double quotation
marks (“ ”).
The
freeCapacityArea
parameter defines the free capacity area to use for the logical drive. If a subsystem
has several free capacity areas, you can use this parameter to identify which free capacity area to use for
logical drive creation. You do not have to assign the entire capacity of the disk drives to the logical drive.
Later, you can assign any unused space to another logical drive.
The usage of the
capacity
parameter, the
owner
parameter, the
cacheReadPrefetch
parameter, and the
segmentSize
parameter is the same as described in the previous examples of the
create logicalDrive
command.
Chapter 4. Configuring a Storage Subsystem
4-37