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Chapter 3. Standalone SCSI rootvg to virtual SCSI 45
As with any migration, planning is essential. Our instructions generally refer to a
single disk rootvg environment. If you have multiple disks in your rootvg then:
򐂰 If the rootvg is mirrored across the disks, you may want to break the mirror
first. This gives you a recovery point if any problem occurs.
򐂰 If the rootvg is striped across a number of disks then our recommendation is
that you use the method in 3.1, “Back up to CD and restore” on page 46.
There are four methods provided in this chapter to migrate the data from a
standalone disk to a Virtual I/O Server virtual SCSI-managed disk. Different
methods will appeal to each systems administrator depending on the skill level
and availability of other team personnel such as SAN administrators and backup
operators. Our suggestion is to choose the method that gives you the best
flexibility with as little risk as possible based on your service-level requirements.
The methods are listed below in no significant order:
򐂰 Back up to CD/Tape and restore on Virtual I/O Server managed disk.
򐂰 Mirror rootvg disks to SAN disks.
򐂰 Clone rootvg to an external disk.
򐂰 Other methods such as NIM.
Each method is discussed in the following sections in detail.