Storage control system and method

Details Storage control system and method Storage control system and method

2006-01-10

2008-09-30

Corrielus, Jean M (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C711S167000, C711S155000, C711S154000, C711S114000, C709S238000

Reexamination Certificate

active

07430572

ABSTRACT:
A disk array system including a plurality of disk drives, including a plurality of first-type disk drives having a first predetermined level of reliability and used to form a first-type logical unit having a plurality of a first-type of chunks, and a plurality of second-type disk drives having a second predetermined level of reliability which is lower than the first level of reliability and used to form a second-type logical unit having a plurality of a second-type of chunks; and a storage controller which copies data stored in a source chunk to a destination chunk, wherein the destination chunk is selected from the first-type of chunks or the second-type of chunks.

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