HP MPIO Full Featured DSM for SAN Virtualization Services Platform 4.01.00 installation and reference guide (5697-0237, January 2010)

2 Support for load balancing in Cluster
environment
In Windows Server 2008 and Windows Server 2008 R2 Failover Cluster, load balancing is enabled
by default and cannot be disabled.
In Windows Server 2003 Cluster Server, only NLB is supported.
Recovering inaccessible disk devices
If there is a stray reservation on a disk device, the device becomes inaccessible to the host systems
connected to it. This is because the strong reservation type (persistent reservations) supports load
balancing in clusters.
You can use the persistent reservations clear utility that comes with HP MPIO SVSP DSM package to
remove the stray reservations. For more information on how to use this utility, see HP MPIO SVSP
DSM persistent reservations clear utility.
HP MPIO Full Featured DSM for SAN Virtualization Services Platform 4.01.00 installation and reference
guide 21