Storage apparatus and data storage method using the same

Details Storage apparatus and data storage method using the same Storage apparatus and data storage method using the same

2008-01-17

2011-10-11

Lo, Kenneth M (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S112000, C711SE12016

Reexamination Certificate

active

08037244

ABSTRACT:
A storage apparatus comprises a disk device and a disk controller for controlling the disk device. The disk controller provides a data volume including an actual volume and virtual volume with a volume capacity virtualization function. The virtual volume is associated with a pool volume for storing the actual data and the actual data is stored in the pool volume. In response to a write command from a host computer, the disk controller compresses write data under RAID 5 control and stores the compressed data in a storage area in the actual volume. If the entire compressed data cannot be stored in that storage area, the disk controller stores the remaining portion of the compressed data in the virtual volume.

REFERENCES:
patent: 5584008 (1996-12-01), Shimada et al.
patent: 7058769 (2006-06-01), Danilak
patent: 7350101 (2008-03-01), Nguyen et al.
patent: 05-189157 (1992-01-01), None
patent: 9120076 (1991-12-01), None
English translation of JP 05-189157 A (machine translated May 11, 2010).

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