HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide

Table Of Contents
Backing Up, Cloning, and Moving Data
7–2 HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and
Configuration Guide
Creating Clones 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.
Figure 7–1: CLONE utility steps 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
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