how to determin LUN number at true 64 unix on xp512 storage

[Mohammad_14]

Dears;
i have multipple different platform connected to xp512 storagework, all i can determine wich disk name dedicated to any lun i want via utility named xpinfo and normal unix commands like ioscan helps, becouse unix name the devices through its physical path, however we cant determine such informations at tru64 unix becouse we it didnt depend on physical path and the xpinfo utility dont work on it.
how could i solve this problem and find informations about luns on tru64 unix?
thanx

[SAKET_5 · Accepted solution]

Hi Mohammad,

We have a large number of Tru 64 Unix hosts attached to our SAN using HP EVA 5000s and HSG80s storage arrays.

So, I would provide my input based on the EVA & HSG80s experience...you may find it to be of some help. When we create a Vdisk on an EVA or HSG80, we assign a UDID.

From the UNIX host end, you could simply just do a "hwmgr -view devices" - and the result shows you the storage units presented to the host with their UDID. Depending on your UDID scheme, this is sufficent to tell you the LUN, e.g. we use a 5 digit UDID - 1st digit tells us the campus, next two tell us the number of the storage array and the last two tell us the LUN.

Alternatively, from the command output from "hwmgr -view devices", you could also then do a "hwmgr -show scsi -id xyz", where xyz is the device HWID that you wish to gather LUN information about. This command output contains the BTL (eg. 0/0/19) value.

Hope it helps.

Cheers,
Saket.

[Mohammad_14]

Dear Saket

Thank you for reply and sorry for late feed back, i tested what you notified me to do it gave a WWN for disk i dont know if that helps yet , i have a big environment with multipple Platforms i hope we keep in touch and help each other by sharing our experience and support each other with our informations
i will be glad if you contact me personally on my work mail:

mohammedab@fastlink.com.jo

regards
Mohammed