If you are on a version earlier than 7.1, the VxVM disk names in the case of DAS disks in FSS environments, must be regenerated to use the host name as a prefix. The host prefix helps to uniquely identify the origin of the disk. For example, the device name for the disk disk1 on the host sys1 is now displayed as sys1_disk1.
To regenerate the disk names, run the following command:
# vxddladm -c assign names