Hewlett-packard Development Company, L.P.

Ranjani Narayan

Keshavan Varadarajan

Sabyasachi Sengupta

Meera K Raghunandan

Scott T Millward

Kiran Kumar Kasturi

Gautham Natanasabapathy

Fatal errors are uncorrectable errors in hardware, which cause entire applications to be restarted and at worst can cause machine reboots. A method of recovering from a fatal error in a system having a plurality of components, in which the system includes a processor for executing a plurality of processes, comprises detecting an error in the system, determining which of the components caused the error, isolating processes affected by the error and recovering from the error. Assistance in error recovery can be provided by designing processes using check pointing, in which a back up of data pages is taken at predetermined points in a process, so that minimal loss of transactions occurs in the case of a fatal error.

Methods and apparatus for recovering from fatal errors in a system

The computer availability is predicted by determining a hazard fail rate for the computer system that is based on the hazard fail rate of the individual computer components and the computer system structure s, as well as the mean repair rate for the system. The computer hazard rates of individual computer system components are based on the error monitoring of those computer components during the computer system operation in real time.

Method of predicting availability of a system

The present invention relates to a method and apparatus for dumping memory. More particularly a computer-implemented method of saving at least some data within volatile storage to non-volatile storage when a computer system panics is described. The method includes the steps of: the computer system defining a specified portion of volatile storage () containing data to be saved as a dump device (), rebooting () the computer system without affecting the data within the dump device, and the computer system copying () the data in the dump device to non-volatile storage (). A reboot of the computer system after copying the data to non-volatile storage is not necessary for the computer system to begin () normal operation.

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Bengaluru, India

Ranjani Narayan