Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-01-24
2006-01-24
Iqbal, Nadeem (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C711S133000
Reexamination Certificate
active
06990603
ABSTRACT:
A method and apparatus for transferring data between a main volatile memory and a backup memory in a redundant system comprised of a main sub-system and a mirror sub-system is provided. For the purpose of preserving uninterruptible power supply energy, data is continuously transferred to back-up memory which may be a corresponding volatile memory of the mirror sub-system, or a non-volatile memory of the main sub-system. The method further includes the steps of detecting a loss of system power, transferring data from volatile memory to non-volatile memory, and turning off the power supply of the non-volatile memory module. The method is capable of detecting the status of the uninterruptible power supply of the mirror system and if that system is operative then only data not previously backed up is transferred to main non-volatile memory; otherwise, if a power failure is detected in both sub-systems all data in volatile memory, not previously written to non-volatile memory is transferred to non-volatile memory.
REFERENCES:
patent: 3801963 (1974-04-01), Chen
patent: 4763333 (1988-08-01), Byrd
patent: 5414861 (1995-05-01), Horning
patent: 5485623 (1996-01-01), Kurokawa et al.
patent: 5621885 (1997-04-01), Del Vigna, Jr.
patent: 5742792 (1998-04-01), Yanai et al.
patent: 5822600 (1998-10-01), Hallowell et al.
patent: 5835780 (1998-11-01), Osaki et al.
patent: 5872984 (1999-02-01), Berglund et al.
patent: 6052797 (2000-04-01), Ofek et al.
patent: 6151688 (2000-11-01), Wipfel et al.
patent: 6195754 (2001-02-01), Jardine et al.
patent: 6336174 (2002-01-01), Li et al.
patent: 6389546 (2002-05-01), Kano et al.
patent: 6393584 (2002-05-01), McLaren et al.
patent: 6553408 (2003-04-01), Merrell et al.
patent: 6571354 (2003-05-01), Parks et al.
patent: 6640278 (2003-10-01), Nolan et al.
patent: 6700351 (2004-03-01), Blair et al.
patent: 6775794 (2004-08-01), Horst et al.
Exanet Inc.
Iqbal Nadeem
Sughrue & Mion, PLLC
LandOfFree
Method and apparatus for securing volatile data in power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for securing volatile data in power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for securing volatile data in power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3527577