Hewlett Packard Enterprise Development LP

Hewlett-packard Development Company, L.P.

Jeffrey A Plank

Joseph Foster

Michael White

Tahir Cader

David Allen Moore

Vincent Hung Nguyen

Robert C Elliott

Mark J Thompson

Scott P Faasse

Robert Van Cleve

Nathaniel S DeNeui

A storage controller for cache management that includes a cache memory and a cache management module. The cache management module to, on receipt of region specification requests from hosts, extract from the region specification requests cache rules for management of regions of data storage of a storage array, and on receipt of data operation requests from hosts, process the data operation requests based on the extracted cache rules.

Cache management

To migrate data from a first storage system to a second storage system, the second storage system detects a migration of a persistent storage media from the first storage system to the second storage system. In response to detecting the migration of the persistent storage media, write information from a write cache in the first storage system is copied to a write cache in the second storage system, where the write caches in the first and second storage systems were not maintained synchronously before the write information from the write cache in the first storage system is copied to the write cache in the second storage system.

Migrating write information in a write cache of a storage system

In a system, temperature measurements are logged. From the logged measurements, duration of operation of the system in each of a plurality of temperature bands is determined.

Temperature band operation logging

Data read from a volume is decrypted using a first key. The decrypted data is encrypted using a second key. The encrypted data is written back to the volume. An access request to a location of the volume is received from a host. Data is encrypted to or decrypted from the location using the first or second key, in response to the access request. The first key is used for the access request if the location has not been decrypted using the first key and encrypted using the second key. The second key is used for the access request if the location has been decrypted using the first key and encrypted using the second key.

Decrypt and encrypt data of storage device

Embodiments include methods, apparatus, and systems for storage device data encryption. One method includes encrypting data on a storage device with a key and then transmitting the key to a cryptographic module that encrypts the key to form a Binary Large Object (BLOB). The BLOB is transmitted to an array controller that is coupled to the storage device which stores the BLOB.

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Cypress, TX, United States of America

Jeffrey A Plank