High LUNs in HP-UX

[Michael_556]

Hi

We have a target device connected to a SAN.
I have noticed that HPUX can work with LU numbers 0-7.
LUNs higher than 7 can not be accessed by HPUX.
I have also noticed that if i define LUN 0 as raid device (0xC) then i receive a scsi report LUNs command from the HPUX however only LUNs 0-7 are being accessed.

How can i make HPUX access LUNs higher than 7?
Are there some specific flags in Inquiry or inquiry page 80h they i should set?
Do i need inquiry page 80h at all?

Thanks,
Michael

[Mobeen_1]

Michael,
There has been some discussion in this forum on the same subject, please review the link below and that should throw some light

http://forums1.itrc.hp.com/service/forums/questionanswer.do?admit=716493758+1104148235194+28353475&threadId=47921

regards
Mobeen

[Steven E. Protter]

If there is no disk assigned on lun0 hp-ux typically detects the disk array itself as a disk. Except its not a disk and can generate EMS errors.

The rule of thumb in the past for LUN's higher than 7 is yes, on HP disk arrays.

I have been waiting several years for a patch that will allow hp-ux to access lun numbers above 7 on non-hp disk arrays.

It probably depends on your disk array vendor how many luns are assignable.

SEP

[Sanjay_6]

Hi Michael,

Maybe this link will help,

http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000072399697

The itrc doc id is KBRC00010719.

Hope this helps.

Regds