Storage management system, storage management server, and...

Details Storage management system, storage management server, and... Storage management system, storage management server, and...

2005-06-20

2008-08-05

Ellis, Kevin L (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

Reexamination Certificate

active

07409496

ABSTRACT:
In a storage management system, a host recognizes a plurality of storage apparatuses as one virtual storage apparatus. The user divides each of the volumes that the storage apparatuses have into a plurality of classes in accordance with a policy. When a user specifies moving target data and a class or a policy of a moving destination, the data is reallocated to a class that meets it. The class or policy is held as a data allocation policy. If a sufficient empty space is not present in the moving destination class, by finding out from allocated data, data that also complies with a policy of other class, target data to be expelled and a class of expelling destination are determined for expelling data, so as to ensure a sufficient empty space for reallocation.

REFERENCES:
patent: 2004/0024796 (2004-02-01), Takeda et al.
patent: 2004/0225662 (2004-11-01), Nojima
patent: 2001-067187 (2001-03-01), None
patent: 2003-140836 (2003-05-01), None

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