HP Hitachi Dynamic Link Manager Software - Manual (Page 202)

3. Creating an HDLM Environment
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35 0 - c8t50060E08000436D1d7
000006 0001.0000.0000000000653200.0007 HITACHI .DF600F
.77010152 0043 0C Online Own
131650 0 - c8t50060E08000436D1d7
000007 0001.0000.0000000000653600.0007 HITACHI .DF600F
.77010152 0043 1C Online Non
35 0 - c8t50060E08000436D1d7
18. Back up the contents of the pre- and post-migration environments.
Backups of the environments are required for the following situations:
• If an error occurs in the post-migration environment:
Reboot from the pre-migration environment, and then use it to restore the
post-migration environment. Alternatively, the backup of the post-migration
environment can also be restored.
• If you want to migrate from a boot disk environment to a local boot disk
environment, you can use the backup to return to the state before creating the
boot disk environment.
3.8.4 Uninstalling HDLM
First, prepare one LU that has the same capacity and slice configuration as that of the
boot disk, for each mirror of the boot disk. They will become the boot disks after the
migration.
(1) Excluding the Prepared LUs from HDLM Management
1. Use the
dlmseconf
utility to configure the HDLM device.
2. Remove the new LU from HDLM management.
For details, see 3.5.5 Using the HDLM Device Unconfiguration Function When
Performing a New Installation of HDLM.
3. Reboot the host with the reconfiguration option specified.
# reboot -- -r
(2) Configuring an Environment and then Uninstalling HDLM
This section describes using the device names shown in Figure 3-17: Current boot
disks and boot disks after the migration.