Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2006-08-22
2009-12-01
Peugh, Brian R (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S129000
Reexamination Certificate
active
07627714
ABSTRACT:
An apparatus, system, and method are disclosed for preventing write starvation in a storage controller with access to low performance storage devices. A storage device allocation module is included to assign a storage device write cache limit for each storage device accessible to a storage controller. The storage device write cache limit comprises a maximum amount of write cache of the storage controller available to a storage device for a write operation. At least one storage device comprises a low performance storage device and a total amount of storage available to the storage devices comprises an amount greater than a total storage capacity of the write cache. A low performance write cache limit module is included to set a low performance write cache limit. The low performance write cache limit comprises an amount of write cache available for use by the at least one low performance storage device for a write operation. The amount of write cache available to the at least one low performance storage device comprises an amount less than the total storage capacity of the write cache.
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Ash Kevin John
Kalos Matthew Joseph
Kubo Robert Akira
Farrokh Hashem
International Business Machines - Corporation
Kunzler & McKenzie
Peugh Brian R
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