Storage device and its control method

专利名称：Storage device and its control method发明人：Hirotaka Nakagawa,Masayasu Asano,Takeki

Okamoto,Nobuyuki Osaki

申请号：US12527160申请日：20090525公开号：US08341425B2公开日：20121225

专利附图：

摘要：Provided is a storage device which partitions data from a host into multiplepartitioned data and distributes, encrypts and stores them together with a parity to andin multiple memory mediums. This storage device executes processing of restoring the

partitioned data or the parity stored in a memory medium to be subject to encryption re-key based on decrypted data of the partitioned data or the parity stored in each memorymedium other than the memory medium to be subject to encryption re-key among themultiple memory mediums, storing the restored partitioned data or the parity in abackup memory medium while encrypting the restored partitioned data or the paritywith a new encryption key, and thereafter interchanging the backup memory medium andthe memory medium to be subject to encryption re-key so that the backup memorymedium will be a memory medium configuring the parity group and the memory mediumto be subject to encryption re-key will be the backup memory medium.

申请人：Hirotaka Nakagawa,Masayasu Asano,Takeki Okamoto,Nobuyuki Osaki

地址：Sagamihara JP,Yokohama JP,Odawara JP,Yokohama JP

国籍：JP,JP,JP,JP

代理机构：Brundidge & Stanger, P.C.

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