Temperature control to reduce cascade failures in a...

Details Temperature control to reduce cascade failures in a... Temperature control to reduce cascade failures in a...

2006-06-29

2010-12-07

Bragdon, Reginald G (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S111000

Reexamination Certificate

active

07849261

ABSTRACT:
Method and apparatus for reducing a likelihood of a cascade failure in a multi-device array. The array preferably comprises a controller and a plurality of storage devices to define a memory space across which data are stored in accordance with a selected RAID configuration. The controller operates to sever an operational connection between the storage devices and a host device in relation to a detected temperature of at least one storage device of the array. Preferably, when a selected device reaches a first threshold temperature level, the controller arms for a potential shutdown. When a selected device reaches a second higher threshold temperature, the controller preferably powers down all of the devices and executes a self-reboot operation. The controller preferably monitors a temperature of the array while the devices remain powered down, after which the storage devices are powered up and data reconstruction operations take place as required.

REFERENCES:
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patent: 7035972 (2006-04-01), Guha et al.
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patent: 2002/0188711 (2002-12-01), Meyer et al.
patent: 2003/0031187 (2003-02-01), Heffernan et al.

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