All V5 releases of Tru64 UNIX attempt to interrogate HP/Compaq storage arrays to acquire essential capability information.  Consequently, whenever an HSG, HSZ, EVA or XP disk unit is detected, V5 will request the appropriate array specific code pages containing the unit information.  However, when Avanti is using disk volume files there is no array information to be discovered.  Therefore, when using Tru64 V5 on Avanti, labeling disk volume files as array volumes is not recommended.  Instead, for disks above 18GB, use the default RZ58 catch-all type.  For all other volumes, use one of the supplied disk types.

Warning:Labeling a volume as an HSZ, HSG, etc. unit will often cause Tru64 UNIX V5 to mis-identify or reject the volume because the additional array information does not exist.