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US 8,151,119 B2Granted
Method and apparatus for secure data mirroring a storage system
AssigneeHitachi, Ltd.
InventorsYuichi Yagawa, Nobuyuki Osaki
Life of this patent
Estimating the term…
Abstract
A secure data mirroring capability in a storage system includes encrypting data blocks in a primary volume in preparation for a data mirroring operation. The encrypted data blocks are mirrored to a secure secondary volume. Host systems provide keys from which encryption keys are produced for encrypting the data blocks. Access to data on the secure secondary volume requires decryption using the key that was used to produce the encrypted data blocks.
Claims7
A storage system configured to be coupled to a host computer via a network comprising:
- a first data volume storing write data received from the host computer;
- and
- a storage controller configured to perform write operations to the first data volume according to write requests received from the host computer,
- wherein the storage controller is configured to encrypt data stored in the data volume with a first key,
- wherein the storage system communicates the encrypted data to another storage system so that the stored data is mirrored to said another storage system in encrypted form, and
- wherein when stored data in said another storage system is detached, a second key associated with said first key is deleted.
3 more elements
Dependencies are inferred from the claim text.