Patent ID: 7774618
Filing Date: 2010-08-10
Classification: G06F,H04L

Abstract:
1. A storage system configured to be coupled to a host computer via a network, the storage system comprising: a storage having at least one physical storage device; and a controller coupled to the storage, the controller configured to: encrypt a first data stored in the storage; update a progress position information based on the encrypted position of the first data; receive a write request including a second data to be written; compare a target position for the second data with the encrypted position indicated by the progress position information; store the second data as unencrypted data in the target position if the target position corresponds to a position that has not been encrypted; store the second data as encrypted data in the target position if the target position corresponds to a position that has been encrypted; and access a third data stored in the storage including reading the third data, wherein the accessing of the third data is performed during the encrypting of the first data.