Disk array device and virtual volume management method using...

Details Disk array device and virtual volume management method using... Disk array device and virtual volume management method using...

2003-08-07

2008-10-07

Peikari, B. James (Department: 2189)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S113000

Reexamination Certificate

active

07434026

ABSTRACT:
A logical table has a layered structure formed of a higher layer logical table arranged on a memory and a lower layer logical table arranged on a disk and stores where each part of a physical region corresponding to each part of a virtual volume is located, a physical table has a layered structure formed of a higher layer physical table arranged on the memory and a lower layer physical table arranged on the disk and stores a state of assignment of each part of a physical region, and a controller copies a part or all of the lower layer logical table and the lower layer physical table into the memory to conduct management of virtual volume.

REFERENCES:
patent: 07-210332 (1995-08-01), None
patent: 2002-073409 (2002-03-01), None

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