Manage Learn to apply best practices and optimize your operations.

How WWNs are associated with LUNs

Are WWNs associated with LUNs?

Associating a world wide name (WWN) to a logical unit number (LUN) within a storage array is a way of implementing data security in the SAN. Each HBA in your servers connected to the SAN has a WWN. Within the storage array, you can assign the WWN to a particular LUN so that even if zoning is not implemented in the SAN fabric, only that particular HBA will have access to that specific LUN. This is sometimes referred to as "LUN masking." Chris

Editor's note: Do you agree with this expert's response? If you have more to share, post it in one of our .discussion forums.

The views and opinions expressed by Christopher L. Poelker are his alone and not necessarily shared by Hitachi Data Systems.

Dig Deeper on SAN technology and arrays