WWID - Where it come from?

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Dear All,

 

I have been wondering a question for a long time that where WWID come from? (assigned by OS, storage system...).Based on my experience, WWID is assigned by Storage system but I do not know how it is formed (by WWNN or WWPN...). I have read many documents about this, however there is no document tell me details about WWID.

 

Could you help me have details about this?

 

Thank you in advance.

CD
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Jamie Bainbridge's picture Red Hat Guru 7257 points
20 November 2012 10:40 PM

For LUNs, it is assigned by the storage, for other hardware it is assigned by the vendor. The idea being to uniquely identify each storage component within a given storage fabric.

 

Sometimes the WWID can include a component which identifies a vendor, similar to MAC addresses on network cards.

 

More at: http://en.wikipedia.org/wiki/World_Wide_Name

CD Active Contributor 280 points
21 November 2012 12:35 AM

thank Mr Jamie.

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