Patent ID: 7024410
Filing Date: 2006-04-04
Classification: G06F,H04L,Y10S

Abstract:
1. A storage system adapted to be coupled to a plurality of host computers, said storage system comprising: a plurality of disk drives storing data from said host computers, said disk drives are divided into a plurality of regions as logical units each to be identified with a logical unit number; and a controller controlling read/write of data from/to said disk drives in response to accesses from said host computers, wherein said host computers have a plurality types of host computers, wherein said controller includes an access management map including a plurality of identifiers of said host computers and a plurality of identifiers of a plurality of virtual logical units, said identifiers of said virtual logical units being formed by renumbering, as specified by a user, each said logical unit number, wherein said renumbering as specified by said user includes mapping each of said identifiers of said virtual logical units to any number of logical unit numbers, and wherein said controller controls accesses from said host computers to said virtual logical units in accordance with said access management map so that a host computer can access a region identified with a logical unit number.