Hi,
if you're using EMC equipment, you could use their free Storage Viewer Plugin.
It's available on Powerlink and will provide all infos regarding used storage arrays and LUNs.
No other vendors provide such a smart tool for ESX admins, you need to collect the required data from the logs.
Because you're talking about a SAN, do you have access to the zonesets of the involved switches/fabrics or at least the nameserver information as it usually contains the zones a WWN belongs to?
You could easily get the LUN WWN of each connected device which might be a good start.
Simply perform a ls /vmfs/devices/disks/vml* and read the following fantastic article to isolate the LUN WWN from the received output.
Understanding VMFS volumes
To get a list of all targets each HBA does see, perform the following for each HBA.
cat /proc/scsi/lpfc/[i]X[/i][/b]
The example is for Emulex HBA's, for QLogic you need to replace the lpfs with ql..... (not quite sure about the correct name).
Hope this helps a bit.
Greetings from Germany. (CET)
Hope this helps a bit.
Greetings from Germany. (CEST)