HP StorageWorks HSG80 ACS Solution Software V8.8 for Sun Solaris Installation and Configuration Guide (AA-RV1RA-TE, March 2005)

Backing Up, Cloning, and Moving Data
193HSG80 ACS Solution Software V8.8 for Sun Solaris Installation and Configuration Guide
Controller Serial is the low-order 48 bits of the controller that “initialized” the
storage set. The Controller_Serial is composed from several fields, but the high
order 12 bits are a Reserved Field.
VSN_Seed is a counter that is incremented every time we initialize a storage set.
In the case that the linked WWID is already in use, a unique WWID will be
allocated, and a message to this effect will be displayed. This is not a syntax error
and does not cause the command to fail.
CLI format
CLI> add snapshot_units <SnapUnit> <UnitName> <SourceName>
use_parent_wwid
Snapshot Unit - unit number to be assigned to the snap unit.
Unit Name - name of storage set or disk that will become the
snap unit.
Source Name - unit number of source storage set or disk.
Example:
CLI> add snap d2 disk10100 d1 use_parent_wwid
Example of error message text:
CLI> add snap d2 disk10100 d1 use_parent_wwid
A new WWID has been allocated for this unit because the linked WWID for d2 is already in
use.
CLI> run clonew
Implementation Notes
Add Snap with Linked WWID - The user has a script that runs every night
to create a snapshot, run a backup to tape from the snapshot, then delete the
snapshot. Each time this is done, a new WWID is allocated. When the operating
system runs out of room for all of these “orphaned” WWIDs, the host system must
be rebooted. Therefore the user decides to update the script such that the “add
snap” command reads as follows:
CLI> add snap d2 disk10100 d1 use_parent_wwid.
This results in same WWID being used for the snapshot each night.
Run Clonew - Operates the same as “CLI> run clone” with the exception that
clonew will use the linked WWID associated with the source unit instead of
allocating a new one.
CLI> run clonew