HP StorageWorks Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide (AA-RPHZF-TE, March 2004)

Replicating Storage Units
217Data Replication Manager HSG80 ACS Version 8.7P Configuration Guide
Cloning Data for Backup
Use the CLONE utility to duplicate data on any unpartitioned single-disk unit, stripeset,
mirrorset, or striped mirrorset in preparation for backup. When the cloning operation is done,
you can back up the clones rather than the storageset or the single-disk unit, which can
continue to service its I/O load. When you are cloning a mirrorset, CLONE does not need to
create a temporary mirrorset. Instead, it adds a temporary member to the mirrorset and copies
the data to this new member.
The CLONE utility creates a temporary, two-member mirrorset for each member in a
single-disk unit or stripeset. Each temporary mirrorset contains one disk drive from the unit
you are cloning, and one disk drive to which CLONE copies the data. During the copy
operation, the unit remains online and active, so the clones contain the most up to date data.
After the CLONE utility copies the data from the members to the clones, it restores the unit to
its original configuration and creates a clone unit you can back up. The CLONE utility uses the
steps shown in Figure 36 to duplicate each member of a unit.
Use the following steps to clone a single-disk unit, stripeset, or mirrorset:
1. Establish a connection to the controller that accesses the unit you want to clone.
2. Start CLONE using the command:
RUN CLONE
3. When prompted, enter the unit number of the unit you want to clone.
4. When prompted, enter a unit number for the clone unit that CLONE will create.
5. When prompted, indicate how you would like the clone unit to be brought online: either
automatically or only after your approval.
6. When prompted, enter the disk drives you want to use for the clone units.
7. Back up the clone unit.
Figure 36: Steps the CLONE utility follows for duplicating unit members
Unit
Disk10300
Unit
Disk10300
Clone of Disk10300
Clone Unit
Temporary mirrorset
Unit
Disk10300
New member
Unit
Disk10300
New member
Temporary mirrorset
CXO5510A
C
o
p
y