Failure recovery method

Details Failure recovery method Failure recovery method

2011-04-26

2011-04-26

Maskulinski, Michael C (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S003000, C714S015000

Reexamination Certificate

active

07934119

ABSTRACT:
The reliability is improved at a low cost even in a virtualized server environment. The number of spare servers is reduced for improving the reliability and for saving a licensing fee for software on the spare servers. A server system comprises a plurality of physical servers on which a plurality of virtual servers run, a single standby server, a module for detecting an active virtual server, and a module for switching the correspondence of boot disks of virtualization modules for controlling virtual servers to the physical servers. When a physical server fails, the boot disk of the associated virtualization module is connected to a spare server to automatically activate on the spare server those virtual servers which have been active upon occurrence of the failure.

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