Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2007-03-29
2010-10-05
Iqbal, Nadeem (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
Reexamination Certificate
active
07809975
ABSTRACT:
A computerized system includes two storage processors having respective local write caches configured to mirror each other. When a first storage processor becomes unavailable and mirroring of the local write caches is prevented, the computerized system continues to attend to write operations from an external host in a write-back manner by caching write data from the write operations in the local write cache of the second storage processor. In response to a failure of the second storage processor, the computerized system preserves the write data within the local write cache of the second storage processor. Then, upon recovery of the second storage processor from the failure, the computerized system continues to attend to further write operations from the external host in the write-back manner by caching additional write data in the local write cache of the second storage processor while the first storage processor remains unavailable.
REFERENCES:
patent: 6574753 (2003-06-01), Haynes et al.
patent: 6629211 (2003-09-01), McKnight et al.
patent: 6671705 (2003-12-01), Duprey et al.
patent: 6842829 (2005-01-01), Nichols et al.
patent: 7062675 (2006-06-01), Kemeny et al.
patent: 7231497 (2007-06-01), Trika et al.
patent: 7441081 (2008-10-01), Humlicek
patent: 7558981 (2009-07-01), Ashmore et al.
patent: 2003/0065841 (2003-04-01), Pecone
patent: 2004/0117579 (2004-06-01), Wu et al.
patent: 2004/0117580 (2004-06-01), Wu et al.
patent: 2006/0004973 (2006-01-01), Sardella et al.
patent: 2006/0107005 (2006-05-01), Philippe Andre et al.
patent: 2006/0143407 (2006-06-01), Humlicek
patent: 2007/0088975 (2007-04-01), Ashmore et al.
patent: 0817054 (1998-01-01), None
patent: 0889409 (1999-01-01), None
Buckley William
French David
Manning Phillip J.
Sanville Alex
Sullivan Douglas
BainwoodHuang
EMC Corporation
Iqbal Nadeem
LandOfFree
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