HP MPIO, Installation And Reference Manual, Page: 19 / 53

2 Support for load balancing in
Failover Cluster Server environment
for Windows Server 2008
The load balancing for the cluster devices is enabled by default and cannot be turned OFF.
• Recovering inaccessible disk devices
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 the HP MPIO EVA DSM package
to remove the stray reservations. For more information on how to use this utility, see HP MPIO EVA
DSM persistent reservations clear utility .
HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 family of Disk Arrays 3.00.00
19