What are the common Linux commands for SAN-related activities? How do I check if a LUN is attached to the computer?

Posted by Nishant on Server Fault See other posts from Server Fault or by Nishant
Published on 2011-03-05T07:05:38Z Indexed on 2011/03/05 23:26 UTC
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linux

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redhat

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san

How do I check if a LUN has been presented to my server? What are the Linux commands for that? Do the LUNs show up in a fdisk -l command like a normal /dev/sda gets listed?
What are other commands associated with general SAN related checks in Linux?
What is WWN and how does that have any relevance?
If we have LUNs, what is the use of multipathing?

Bit lengthy but I am not able to get a grasp on the topic. Any help would be appreciated.

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