Patent ID: 7523201

Claim:
A method for accessing a data storage system, comprising: receiving a login request from a first specific client, the login request directed to the data storage system; generating, in response to the login request, a first logical unit number map (lun map) for the specific client by determining one or more physical logical unit numbers (PLUNs) of the data storage system that the first specific client has permission to access and then mapping one or more client specific virtual logical unit numbers (VLUNs) of the first specific client to the one or more PLUNs, in the first lun map; exporting the client specific VLUNs to the first specific client; and receiving a data access request command from the first specific client, the request directed to a selected client specific VLUN in the first lun map, and translating the client specific VLUN into a selected PLUN utilizing the first lun map, and performing the data access request command on the selected PLUN associated with the data storage system.