Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2011-07-12
2011-07-12
Nguyen, Than (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S162000
Reexamination Certificate
active
07979635
ABSTRACT:
A method to allocate resources in a data storage library comprising a plurality of data storage devices configured as a RAID array, by establishing a normal operation resource allocation, a RAID failure resource allocation, and a multiple storage device failure resource allocation. The method receives host I/O requests, and enqueues those host I/O requests. If the system is operating without any storage device failures, then the method processes host I/O requests using the normal operation resource allocation. If the system is operating with a storage device failure, then the method processes host I/O requests using the RAID failure resource allocation. If the system is operating with multiple storage device failures, then the method processes host I/O requests using the multiple storage device failure resource allocation.
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International Search Report and Written Opinion dated Feb. 18, 2010.
Bates Allen Keith
Haustein Nils
Klein Craig Anthony
Winarski Daniel James
International Business Machines - Corporation
Nguyen Than
Quarles & Brady LLP
Regelman Dale F.
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