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HP Hitachi Dynamic Link Manager Software User Manual

Page 202

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3. Creating an HDLM Environment

180

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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
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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.