HP-UX 11i v3 Installation and Update Guide, March 2009 (Update 4 Release)

Using drd clone
The drd clone command allows you to create an operating system recovery image,
referred to as an inactive clone, on a free internal or SAN disk. For recovery purposes,
all you need to run is
drd clone –t target_dsf
where target_dsf is the device special file of the spare disk.
In the event that the update to HP-UX 11i v3 on the active system does not go as
planned, you can activate and boot the HP-UX 11i v2 clone in minutes by entering:
drd activate –x reboot=true
If you do activate and boot the HP-UX 11i v2 clone, then decide to re-activate the HP-UX
11i v3 image on the original disk, you can use the same drd activate command
noted above, as the use of this command will toggle between the original disk and the
clone disk.
NOTE: Once you have updated from 11iv2 to 11iv3 on the active system image, you
can go back and forth between the inactive 11iv2 image and the updated 11iv3 image
by ensuring the following:
• That you have manually installed DRD version A.3.1.0.1027 or greater onto your
updated HP-UX 11i v3 system image if you updated to HP-UX 11i v3 update 1
(September 2007) or update 2 (March 2008). Due to a packaging problem that has
now been fixed, the 11i v2 version of DRD does not get automatically updated on
the 11i v3 system.
• That you do not use the drd runcmd operation when an HP-UX 11i v2 system is
booted, and HP-UX 11i v3 is installed on the inactive image. Use of this operation
would invoke 11i v3 libraries and executables, which can make system calls not
supported on the 11i v2 kernel.
The drd clone contains all files and directories in the root volume, and thus has all the
components that are essential to bringing up a functional system.
For more information on using drd clone and the DRD toolset, refer to the Dynamic
Root Disk System Administrators Guide for HP-UX, DRD white papers, and other DRD
documentation (http://docs.hp.com/en/DRD/infolib.html).
Task 2: Backing Up Your Data Files
There are a number of different backup methods you may wish to choose from
depending on your system backup needs and your configurations. Some recommended
backup methods are:
• HP OpenView Storage Data Protector
• HP-UX fbackup/frecover utilities
58 Preparing to Cold-Install or Update to HP-UX 11i v3