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10 PowerVM Migration from Physical to Virtual Storage
2.1 File-backed optical for restoration
File-backed optical devices provide a clean, easy-to-use mechanism to take a
backup of either a root or data volume group and restore it to a target device. The
target device could be a LUN presented as virtual SCSI or virtual Fibre Channel.
In this example the terms source system and target system are used:
Source system May be a standalone system or a logical partition
Target system A logical partition
The mkcd command produces a set of ISO files that were used to migrate data.
Ensure that there is sufficient space in the chosen file system to store files that
will add up to the size of the volume group being migrated.
On the source system
To make image files, there are two methods that will be detailed:
򐂰 Using the AIX smitty mkcd command
򐂰 The mkcd command line from an AIX shell
Choose whichever method is appropriate for your environment.
Using smitty to make the required images
The following steps detail the use of smitty to create the required images:
1. Run the smitty mkcd command as follows:
# smitty mkcd
2. Select No from the Use an existing mksysb image menu. Selecting No allows
you to create a new system backup that reflects your current running
environment.
3. Select the options that are appropriate to your environment from the Back Up
This System to CD menu. you can also leave the default options as they are.
4. For the File system to store final CD images question, you can leave it blank
or chose to use an option such as an NFS file system.
5. Select Yes for the Do you want the CD to be bootable option.
6. Select No for the Remove final images after creating CD option.
7. Select No for the Create the CD now option.
8. Press Enter to begin the system backup creation.
9. Exit smitty when the OF status appears.