HP storageworks HSG80 Reference Manual page 44

CLI Command Descriptions
• Capacity equal to or greater than the source unit
• Initialized
• Not a partition or a concatset
source-unit
The unit whose contents are frozen in time and preserved on the snapshot unit.
The source unit must have the following characteristics:
• Less than 1.024 TB
• Write-back cache enabled
• Non-transportable
• Must be preferred to one controller or the other. See SET unit-number
PREFERRED_PATH.
Switches
The following switch is available with the ADD SNAPSHOT_UNITS command:
• USE_PARENT_WWID
This switch causes the snapshot unit to be created with a special WWID derived
from that of the parent/source unit. If the special WWID for the specified source
unit is in use, then a new WWID is automatically allocated, and a warning
message is displayed.
NOTE: The use of this switch limits the number of WWIDs that an operating system needs to
track. This may become an issue if snapshots are created and subsequently deleted from the
same source/parent unit on a regular basis.
Example
To create unit D4, which consists of storageset RAID4 and which become a
point-in-time snapshot of unit D1, enter:
ADD SNAPSHOT_UNITS D4 RAID4 D1
See Also
SET units
DELETE container-name
SHOW UNITS
2–28 HSG80 Array Controller V8.7 Command Line Interface Reference Guide