Dynamic Root Disk and MirrorDisk/UX

For more information on checking whether MirrorDisk/UX is
available, and acquiring it if it is not currently installed, see
Four Disk Scenario – Mirroring the Clone When it is Created.
• A copy of Dynamic Root Disk
DRD is available at no charge by searching on DRD from HP’s software depot:
http://software.hp.com/.
• Two disks that are currently in use as the boot disk and the boot mirror
(If the boot mirror has not already been created, the
procedure described below in
How to Mirror vg00 – HP 9000 System can be used.)
• One disk available that can be used for the DRD clone
The disk must be large enough to contain all the logical volumes that are currently in
vg00. The logical volumes in the clone volume group, drd00, will be the same sizes as
those in vg00. In the case of an Integrity system, the disk must also be large enough to
hold EFI and HPSP partitions of the same size as the current root disk.
The disk that is currently the boot mirror will be “broken off” when the clone is booted
and used to mirror the clone.
When the necessary resources have been identified, execute the following command:
# /opt/drd/bin/drd clone –t target_disk
Where target_disk is the block device special file of the clone disk.
The clone will not be mirrored during the time it is modified with drd runcmd.
The procedure below describes how the system administrator may “move” or split the mirror from the
previously booted image to the clone.
Splitting a Mirror from an Inactive Image to Provide a Free
Disk
Follow this procedure to split a mirror from an inactive image to provide a free disk:
1. Mount the inactive (original) system image so that it is available for LVM commands:
# /opt/drd/bin/drd mount
2. Run vgdisplay to determine the mirrored pair in use for drd00: