Dell PowerVault PV-136T Tape Library On HP-UX 11i

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I have a Dell PV-136T Tape Library connected to a SAN across a Brocade SAN Switch,while 2 HP rp7410 servers also connected to the SAN.

I use Veritas Netbackup software,and there are several NT servers and HP-UX servers in the SAN,all of them need to access the tape library.

But when I run "ioscan -fn",it appears to be a lot of devices with the same type and description,"Dell PV-136T SNC" and "IBM Ultrium-2 TD-2 tape drive",but different H/W path. Sometimes they are "Claimed",sometimes "Unclaimed",sometimes "No H/W".

How can I use the PV-136T tape library in HP-UX 11i?

P.S. the Dell PV-136T have 4 drives.