Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2006-07-04
2006-07-04
Vital, Pierre M. (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S113000, C714S005110
Reexamination Certificate
active
07073025
ABSTRACT:
The present invention relates to provide a technology which can detect a disk drive with degradation in the performance even if the disk drive itself does not comprise a function to detect degradation in the performance and which can realize a disk array apparatus which meets a request of a customer by changing a detection level of the degradation in the performance. In the apparatus, a disk controller: generates logical storage areas used for writing or reading data and having redundancy to store data, using the storage areas in the plurality of disk drive; monitors the storing areas in which a request for writing/reading data into/from the plurality of disk drives forming the logical storage areas is stored; and specifies, among the plurality of disk drives forming the logical storage areas, a disk drive having a large number of repeated times and block the specified disk drive.
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Fukuoka Mikio
Okamoto Takeki
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Vital Pierre M.
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