HP StorageWorks XP SNMP Agent Reference Guide: HP XP12000 Disk Array, HP XP10000 Disk Array, HP 200 Storage Virtualization System (AE002-96056, May 2011)

raidExMibVersion
raidExMibVersion indicates the microcode version.
raidExMibAgentVersion
raidExMibAgentVersion indicates the internal version of the extension MIB.
Number of Disk Controllers under Control of SVP (raidExMibDkcCount)
raidExMibDkcCount suggests the number of a disk controller under the control of SVP.
Extension MIB Specifications 23