HP Serviceguard Version A.11.19 Release Notes, October 2009

• If you are upgrading both the Quorum Server and Serviceguard, upgrade the
Quorum Server before you upgrade Serviceguard.
CAUTION:
— Special considerations apply to a rolling or non-rolling upgrade to Serviceguard
A.11.19; see “New Cluster Manager” (page 12).
— If you are using an Alternate Quorum Server Subnet (page 45), you must
upgrade the Quorum Server to version A.04.00 before you proceed; see
“Quorum Server Upgrade Required if You Are Using an Alternate Address”
(page 13).
• If you are upgrading from a release earlier than A.11.16, see “Access changes as
of A.11.16” (page 49).
CAUTION: Make sure that no package is in maintenance mode when you upgrade
Serviceguard; see “Package Maintenance Mode” (page 30) for more information.
Upgrade Using DRD
DRD stands for Dynamic Root Disk. Using a Dynamic Root Disk on HP-UX 11i v3
allows you to perform the update on a clone of the root disk, then halt the node and
reboot it from the updated clone root disk.
You can obtain the DRD software free from software.hp.com; search for
DynRootDisk. For more information, go to HP's Dynamic Root Disk Information
Library at docs.hp.com/en/DRD/infolib.html —> Downloads and Updates.
(You can also reach the information library from www.hp.com/go/drd —>
Additional Information; or go to www.hp.com and search for Dynamic Root
Disk Information Library).
IMPORTANT: Use the clone disk only on the system on which it was created.
Serviceguard does not support booting from a clone disk made on another system
(sometimes referred to as DRD re-hosting).
Rolling Upgrade Using DRD
A rolling upgrade using DRD is like a rolling upgrade, but is even less disruptive
because each node is down for a shorter time. It is also very safe; if something goes
wrong you can roll back to the original (pre-upgrade) state by rebooting from the
original disk.
This method is the least disruptive, but you need to make sure your cluster is eligible;
see“Restrictions for DRD Upgrades” (page 64).
If, after reading and understanding the restrictions, you decide to perform a rolling
upgrade using DRD, follow the instructions under “Performing a Rolling Upgrade
Installing Serviceguard on HP-UX 63