Patent ID: 7243229
Filing Date: 2007-07-10
Classification: G06F,H04L,Y10S

Abstract:
1. A relay device for connection with a plurality of computers and one or a plurality of storage devices, comprising: a computer port for connection with said plurality of computers; a storage device port for connection with said one or plurality of storage devices; a processor; and a memory, wherein when said relay device receives through said computer port a first access request from a first computer for requesting an exclusive access to a first storage area in said one or plurality of storage devices, said processor stores in said memory first information indicating that said first storage area is an exclusive access area, wherein when said relay device receives through said computer port a second access request from a second computer for requesting an access to a second storage area that is wider than said first storage area and includes said first storage area, said processor transmits, based on said first information, an access rejection response to said second computer, and wherein when said second access request is received by said relay device for requesting an access to a second storage area that is wider than said first storage area and includes said first storage area, said processor expands the exclusive access area to an access width of said second access request and stores in said memory second information indicating that said second storage area is an expanded exclusive access area.