HSG80 ACS Solution Software V8.6 for Windows NT and Windows 2000 Installation and Configuration Guide

7–2 HSG80 ACS Solution Software Version 8.6 for Windows NT and Windows 2000 Installation and
Configuration Guide
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 complete, 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 that 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 steps shown in Figure 7–1 to duplicate each member of a unit.