Hewlett-packard Development Company, L.P.

Jonathan Condel

Brian Patterson

David Kiyoshi Umberger

Guillermo Navarro

Bryan Diamond

A data storage device having, for example, a disk array comprising a plurality of independent disks, an array controller for controlling the array and an auxiliary memory device connected to the disk array and array controller for temporarily storing data being moved within the array or being changed from a first data storage type to a second data storage type within the array.

Manipulating data in a data storage device using an auxiliary memory device

The present invention relates to a system and method for allocating and forecasting computational effort from a plurality of service components among a plurality of workloads. Preferably, processing power or other computational service is allocated among the workloads or tasks so as to optimize overall system efficiency and avoid processing bottlenecks. The inventive mechanism may be advantageously applied to the migration or movement of data between different levels of a hierarchical RAID storage system, between various storage systems, and/or between a storage system and a host device of a data processing system.

System and method for adaptive performance optimization of data processing systems

A system and methods employ a redistribution module to predict whether there is data stored in an arrayed storage device that is likely to be data that will be highly accessed in the future. The redistribution module locates high-access data on one or more storage components within the array and redistributes it evenly across all storage components in the array so that no single storage component contains a disproportionate amount of the high-access data. Redistributing high-access data evenly across all storage components (e.g., disks) in a storage array helps prevent I/O (input/output) bottlenecking at any single storage component in the array. I/Os are serviced in a more parallel manner which increases the overall performance of the storage array.

Distributing workload evenly across storage media in a storage array

A system and methods implemented within a multi-level RAID (redundant array of independent disks) storage array operate to initially write data to a lower performing RAID level within the array. In addition, data is migrated between lower and higher performing RAID levels via data migration processes that function as background processes. Benefits of the disclosed system and methods include a non-disruptive environment for servicing host I/O (input/output) requests. Array response times are significantly reduced by not allowing initial data writes to interfere with higher performing RAID levels and by migrating data between lower and higher performing RAID levels in the background when the array is less busy servicing host I/O requests.

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Boise, ID, United States of America

Jonathan Condel