HP Array Controller HSG V8.7 Software - Manual (Page 97)

Creating Storagesets 3–19
Cloning Data for Backup
Use the CLONE utility to duplicate the 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 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 onto 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
onto 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 backup. The CLONE utility uses steps shown in
Figure 3–9 to duplicate each member of a unit.