Information processing apparatus, information processing...

Details Information processing apparatus, information processing... Information processing apparatus, information processing...

2006-11-06

2009-11-24

Elmore, Stephen C (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C711S203000, C711S206000

Reexamination Certificate

active

07624230

ABSTRACT:
An information processing system having a storage apparatus and a file sharing server. The storage apparatus comprises a plurality of storage devices for providing logical devices to store data; and a first processing unit for providing virtual logical units based on a mapping relation between the logical devices and the virtual logical units and being operative to switch the mapping relation dynamically according to an external request. The file sharing server comprises a cache memory including cache extents and a second processing unit controlled to provide the virtual logical units of the storage apparatus to a host system by using the cache extents, managing the mapping relation between the logical devices and the virtual logical units. The mapping between a logical unit and a logical device is dynamically switched as the logical devices store data provided from the host system according to external requests.

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patent: 2005/0071560 (2005-03-01), Bolik
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patent: 2006/0080502 (2006-04-01), Sakaki et al.
patent: 2005-209149 (2005-08-01), None
patent: 2006-107257 (2006-04-01), None

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