Patent ID: 7587426
Filing Date: 2009-09-08
Classification: H04L

Abstract:
1. A network storage virtualization method in a network storage system for a client connected thereto via a network, said network storage system being composed of an access routing means and a plurality of network storages each including a physical network storage device and a storage virtualization unit, said storage virtualization unit providing the client with a view of a virtual network storage system instead of a view of physical structure of the plurality of network storage devices, the virtualization method comprising steps of: storing files dispersedly in the plurality of physical network storage devices corresponding to hash values determined by hashing a logical identifier of an access location where one of the files is physically stored for each of the files; and when a request to generate a file handle to access one of the stored files is received from the client, embedding one of said hash values corresponding to an access location where the file is physically stored in the handle by: