Installation and Reference Guide for HP MPIO Full Featured DSM for XP family of Disk Arrays 3.00.00 (AA-RVJ6F-TE, March 2008)

4. Follow the on-screen instructions.
5. Reboot the system for the new registry parameter to take effect.
IMPORTANT:
During the process of enabling or disabling of load balance in an MSCS environment (for a cluster with
more than two nodes), you may have a set of nodes using SCSI-3 persistent reservations along with
another set of nodes using SCSI-2 rese rvations. In such cases (as part of step 1 in the above sections),
HP recommends that you move the cluster resources to the set of nodes that has the major ity reservation.
Recovering inaccessible disk devices
If there is a stray reservation on a disk device, the device becom es ina ccessible 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 XP DSM package to
remove the stray reservations. For more information on how to use this utility,
see HP MPIO XP DSM persistent reservations clear utility section.
HP MPIO Full Featured DSM for XP family of Disk Arrays 3.00.00
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