Array controller ROM cloning in redundant controllers

Details Array controller ROM cloning in redundant controllers Array controller ROM cloning in redundant controllers

2006-04-11

2006-04-11

Cao, Chun (Department: 2115)

Electrical computers and digital processing systems: support

Reconfiguration

C714S012000, C714S013000

Reexamination Certificate

active

07028177

ABSTRACT:
A system and method for synchronizing firmware revisions in redundant controllers in a storage system is disclosed. Redundant controllers transmit firmware revision numbers during the establishment of a communication links between the controllers. The revision numbers are compared and, if they are not equal, then controller that possesses the more recent firmware revision transmits its firmware across the communication link to the other controller. The more recent firmware is stored in the memory of the other controller, which is then re-booted to ensure that both controllers are operating with the same firmware. If a failed controller is replaced or rebooted while the other controller remains operational, then the firmware revision from the operational controller is transmitted to the replaced or re-booted controller and stored in its memory. The controller is then re-booted to ensure that both controllers are operating with the same firmware.

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patent: 6675258 (2004-01-01), Bramhall et al.
patent: 6715101 (2004-03-01), Oldfield et al.
patent: 6836859 (2004-12-01), Berg et al.

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