Compaq ProLiant Clusters HA/F100 Administrator's Manual page 107

4-2 Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide
Pre-migration Preparation
All of the procedures outlined in this chapter preserve the data on the cluster's
external storage systems. On a case-by-case basis, some of the procedures
allow the cluster to be upgraded while continuing to service clients. These
upgrades are called "rolling upgrades." During these rolling upgrades,
however, the cluster will be operating in a degraded state since one of the
servers will be unavailable to clients. Other installations will require a new
installation of the operating system without giving an option to load Microsoft
Windows 2000 Advanced Server over Windows NTS/E. Read any migration
procedure thoroughly before starting it. As needed, some of these procedures
require all nodes of the cluster to be turned off at the same time causing the
cluster to be unavailable to clients during the upgrade.
IMPORTANT: When migrating to an HA/F200 configuration, the firmware level on each
RA4000 Controller must be updated to the same level.
IMPORTANT: Refer to Appendix C to determine which service packs, software, and
firmware version levels are required for cluster upgrades.
IMPORTANT: These procedures may be updated over time. For additional information on
migrating to Windows 2000 Advanced Server visit the Microsoft website
(http://www.microsoft.com) or the Compaq High Availability website
(http://www.compaq.com/highavailability).
NOTE: These steps assume that you currently have an existing cluster in an operational
state.
A cluster can be migrated to Windows 2000 Advanced Server without
migrating the primary domain controller. However, if the cluster is used as a
backup domain controller, the primary domain controller must be migrated
first. For more detailed information on migrating domain controllers, refer to
your Microsoft Windows 2000 Advanced Server documentation included with
your operating system purchase.
When upgrading from an HA/F100 cluster to an HA/F200 cluster additional
hardware is required. The difference between the clusters is the addition of a
second redundant Fibre Channel loop. To complete the installation of this
loop, the following components are required:
I
One additional Compaq StorageWorks RA4000 Controller per storage
subsystem