Dynamic Root Disk: Quick Start & Best Practices

ii. hpvmmodify -P drdivm2 -d \

disk:avio_stor:0,1,1:disk:/dev/rdisk/disk75

Note: You might see messages indicating a restart is required due to devices

being busy; these can safely be ignored as they only pertain to the original

system, not the target for rehosting.

iii. hpvmmodify -P drdivm3 -a \

disk:avio_stor:0,1,1:disk:/dev/rdisk/disk75

2. Boot VM3:

i. hpvmstart -P drdivm3

ii. hpvmconsole -P drdivm3

iii. From the EFI shell, enter the following:

1. fs0:

2. cd EFI\HPUX

3. hpux.efi

BP6: Additional Considerations

The steps listed above give a very basic overview of rehosting. For more details, please see the

whitepaper, “Exploring DRD Rehosting on HP-UX 11i v2 and v3.” Note that DRD rehosting is only

supported between LVM managed blades and virtual machines (VMs) for HP-UX 11i v3, and is only

supported on LVM managed VMs for HP-UX 11i v2.

Special Considerations for All Best Practices

Specific Details Regarding Clone Creation

Prior to creating a clone, ensure that your original disk is bootable.

The drd clone operation performs the following items:

• Creates Extensible Firmware Interface (EFI) partition on HP-UX Integrity systems

• Creates boot records

• Creates a new LVM volume group or VxVM disk group and a volume in the new group for each

volume in the root volume group. The volume management type of the clone matches that of the

root group.

• Configures swap and dump volumes

• Copies the contents of each file system in the root volume group to the corresponding file system in

the new group

• Modifies particular files on the clone that identify the disk on which the volume group resides

• For LVM-based systems, modifies volume group metadata on the clone so that the volume group

name is the same as the original root volume group when the clone is booted

Mirroring

System Administrators frequently use MirrorDisk/UX to create a redundant copy of an HP-UX system

as protection against hardware failures. DRD provides a means of protecting against software

failures. Combining the use of DRD and MirrorDisk/UX can provide many benefits. Please see the

Dynamic Root Disk and MirrorDisk/UX whitepaper, at

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c01920361/c01920361.pdf, for

various strategies that can be used to combine the benefits of DRD clones and LVM mirrors.