Rolling software upgrades for fault tolerant systems

Details Rolling software upgrades for fault tolerant systems Rolling software upgrades for fault tolerant systems

2007-02-13

2007-02-13

Baderman, Scott (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130, C714S012000, C714S013000

Reexamination Certificate

active

10000335

ABSTRACT:
Application software on a fault tolerant system having an active engine and a standby engine is upgraded. As part of the upgrade, the system determines if the active engine and the standby engine are executing different versions of the application software. The system sends a description of work units from the active engine to the standby engine and sends database activities from the active engine to the standby engine.

REFERENCES:
patent: 5966304 (1999-10-01), Cook et al.
patent: 6378027 (2002-04-01), Bealkowski et al.
patent: 6463501 (2002-10-01), Kern et al.
patent: 6684396 (2004-01-01), Brittain et al.
Harry Singh, “Distributed Fault-Tolerant/High-Availability Systems,” 2001 Trillium Digital Systems, Inc., pp. 1-20.

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