VERITAS Volume Manager 3.5 Hardware Notes (June 2002)

DMP and Hitachi Data Systems Fiber Disk Array Subsystem Support BETA 19 July 2002
10 VERITAS Volume Manager Hardware Notes
Models 7700E / 9910 / 9960
DMP supports the Hitachi Data Systems 7700E/ 9910 / 9960 Disk Array Subsystems in
Active/Active mode only.
For JNI HBA's, some specific settings are recommended by Hitachi, please contact your
Hitachi Data Systems Technical Support Representative for the correct driver
configuration file.
For HITACHI model 9960, depending on the workload of the system, DMP performance
can be improved by adjusting the DMP tunable dmp_pathswitch_blks_shift to a value
higher than the system default of 12.