Creating A Flashcopy Logical Drive With User-Assigned Disk Drives; Creating A Flashcopy Logical Drive With Software-Assigned Disk Drives - IBM System Storage DS3000 Programming Manual

base logical drive. When you create a FlashCopy logical drive by using minimum information, the
storage management software provides default values for the other property parameters that are required
for a completely defined FlashCopy logical drive.

Creating a FlashCopy Logical Drive with User-Assigned Disk Drives

Creating a FlashCopy logical drive by assigning the disk drives provides flexibility in defining your
configuration by letting you choose from the available disk drives in your storage subsystem. When you
choose the disk drives for your FlashCopy logical drive, you automatically create a new subsystem. You
can specify which disk drives to use and the RAID level for the new subsystem. The command takes this
form:
create flashcopyLogicalDrive baseLogicalDrive="baseLogicalDriveName"
[repositoryRAIDLevel=(1 | 3 | 5 | 6)
(repositoryDrives=(enclosureID1,slotID1 ... enclosureIDn,slotIDn)
userLabel="flashcopyLogicalDriveName"
warningThresholdPercent=percentValue
repositoryPercentOfBase=percentValue
repositoryUserLabel="repositoryName"
repositoryFullPolicy=(failBaseWrites | failFlashCopy)]
[enclosureLossProtect=(TRUE | FALSE)]
This example shows a command in which users assign the disk drives:
c:\...\...\client>smcli 123.45.67.89 -c "create flashcopyLogicalDrive baseLogicalDrive=\
"Mars_Spirit_4\" repositoryRAIDLevel=5 repositoryDrives=(1,1 1,2 1,3 1,4 1,5);"
The command in this example creates a new FlashCopy of the base logical drive Mars_Spirit_4. The
FlashCopy repository logical drive consists of five disk drives that form a new subsystem. The new
subsystem has a RAID level of 5. This command also takes a FlashCopy of the base logical drive, which
starts the copy-on-write operation.
This example shows how to use the command in a script file:
create flashcopyLogicalDrive baseLogicalDrive="Mars_Spirit_4" repositoryRAIDLevel=5
repositoryDrives=(1,1 1,2 1,3 1,4 1,5);
This example shows a minimal version of the command:
c:\...\...\client>smcli 123.45.67.89 -c "create flashcopyLogicalDrive
baseLogicalDrive=\"Mars_Spirit_4\";"
The command in this example creates a new FlashCopy for the base logical drive Mars_Spirit_4. The
FlashCopy repository logical drive is created in the same subsystem as the base logical drive, which
means that the FlashCopy repository logical drive has the same RAID level as the base logical drive. This
command starts the copy-on-write operation.
This example shows how to use the command in a script file:
create flashcopyLogicalDrive baseLogicalDrive="Mars_Spirit_4";
Creating a FlashCopy Logical Drive with Software-Assigned Disk
Drives
With this version of the create FlashCopyLogicalDrive command, you choose an existing subsystem in
which to place the FlashCopy repository logical drive. The storage management software determines
which disk drives to use. You can also define how much space to assign to the FlashCopy repository
logical drive. Because you are using an existing subsystem, the RAID level for the FlashCopy logical
drive defaults to the RAID level of the subsystem in which you place it. You cannot define the RAID
level for the FlashCopy logical drive. The command takes this form:
5-3
Chapter 5. Using the FlashCopy Premium Feature