CONTROL PLANE METHOD AND APPARATUS FOR PROVIDING ERASURE CODE PROTECTION ACROSS MULTIPLE STORAGE DEVICES

Abstract: a system and method for providing erasure code protection across multiple storage devices. a data switch in a storage system connects a plurality of storage devices to a remote host. each storage device is also connected to a controller, e.g., a baseboard management controller. during normal operation, read and write commands from the remote host are sent to respective storage devices through the data switch. when a write command is executed, the storage device executing the command sends a copy of the data to the controller, which generates and stores erasure codes, e.g., on a storage device that is dedicated to the storage of erasure codes, and invisible to the remote host. when a device fails or is removed, the controller reconfigures the data switch to redirect all traffic addressed to the failed or absent storage device to the controller, and the controller responds to host commands in its stead.

Inventor(s): Sompong Paul Olarig, William David Schwaderer, Ramdas P. Kachare

CPC Classification: G06F11/1084 ({Degraded mode, e.g. caused by single or multiple storage removals or disk failures})

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