Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition
Reexamination Certificate
2007-10-31
2010-11-23
Lane, Jack A (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Specific memory composition
C711S163000, C711S165000
Reexamination Certificate
active
07840756
ABSTRACT:
An improved RAID storage system adapted to selectively and automatically store the same data “in tandem” using two different storage profiles. In one embodiment, a first store operation occurs in accordance with first storage profile and, if a flag in the first storage profile is set, a second store operation automatically occurs in accordance with a second storage profile but with the same data as stored in the first store operation. The first and second storage profiles are stored sequentially in profile registers within a controller in the storage system. To speed the tandem operation, the data may be held in a re-readable FIFO buffer in the controller. The buffer is sized to hold the minimum size of data that can be stored to the physical disks in the storage system. Preferably, the size of the buffer is substantially equal to the minimum size.
REFERENCES:
patent: 7558931 (2009-07-01), Ishida et al.
patent: 2006/0085604 (2006-04-01), Guthrie et al.
patent: 2008/0282030 (2008-11-01), Kalwitz et al.
patent: 2009/0077333 (2009-03-01), Byrne et al.
Agere Systems Inc.
Lane Jack A
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