Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2007-08-28
2007-08-28
Bataille, Pierre (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C705S400000
Reexamination Certificate
active
10959859
ABSTRACT:
In one aspect the invention provides a signal bearing medium tangibly embodying a program of machine-readable instructions that are executable by a digital processing apparatus to perform operations to determine a maintenance fee for a data storage system. The operations include monitoring at least one data storage device during operation of the data storage system to determine a duty cycle and determining a current value of the maintenance fee based at least in part on the determined duty cycle. In a further disk drive-based embodiment the operations may include, or be instead, determining a disk drive redundancy configuration of disk drives of a data storage system. The operations then compare the determined duty cycle to a threshold value and assert a redundancy configuration change signal based on the result of the comparison. For a RAID configuration embodiment having a RAID level, the asserting operation asserts a RAID level change signal based on the result of the comparison.
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Hood Robert A.
Stuart Alan L.
Bataille Pierre
Harrington & Smith PC
International Business Machines - Corporation
Tsai Sheng-Jen
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