Exactly said. checking SAN is in progress now and expecting our Storage guys to see any abnormal settings done.

BTW. Could you please let me know what SAN Setting was wrong on the machine which you faced issue? so that I could also look into it.

For sure I know, I'm using Iscsi initiator to connect to the target, but I think the target LUN are created in 3rd party storage software where as the LUN are generated as .img files.