Storage system with a data sort function

Details Storage system with a data sort function Storage system with a data sort function

2006-04-18

2006-04-18

Padmanabhan, Mano (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S111000, C711S112000, C711S113000, C711S118000, C711S164000

Reexamination Certificate

active

07032085

ABSTRACT:
A storage system, which can execute sort processing of data without affecting online service, is disclosed. A storage control device12receives a sort instruction specifying a record group for sorting and a sort key from a host device1, reads the record group from an external storage device11into cache memory123, and uses the cache memory123and a work area secured in the external storage device11to execute sort processing of the above record group, and again stores the sorted record group in a prescribed output area within the external storage device11. When a plurality of sort instructions are received, work areas are allocated automatically without overlapping work areas. When record updates occur during online service, a snapshot of the updated records is taken, and sorting of the snapshot is performed.

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