Try this command
vxdisk -g <diskgroup> diskinfo <disk>
or use -e attribute with vxdisk command .. as per 6.0 guide
vxdisk diskinfo
Provides information on the disk referenced in <DiskName>. The information includes the disk name, the dynamic disk group with which the disk is associated, capacity (indicated as Length), disk partition style, free space, device type, port,channel, target ID, LUN, the disk signature, serial number, track alignment settings, Thin Provisioning type (ThinNoReclaim or ThinReclaim for thin provisioned disks),
etc. If the disk has subdisks associated with it, they will be listed.
vxdisk [-g <DynamicDiskGroupName>] diskinfo [-e] <DiskName>
The following attributes apply:
-e Is an optional parameter.
Use the -e option if you want to display extended attribute information for arrays in addition to the basic disk information. Extended attribute information available for display depends on the array type. It can include vendor ID, product ID, revision ID, cabinet serial number, array volume ID, array LUN type, array RAID level, array snapshot LUN, array replication LUN, array media type, array transport protocol, array port WWN number, array port serial number, array controller ID and array hardware mirror.
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