Virtual device sparing

Patent metadata

Field	Value
Publication number	US-9201748-B2
Application number	US-201213996717-A
Country	US
Kind code	B2
Filing date	Mar 30, 2012
Priority date	Mar 30, 2012
Publication date	Dec 1, 2015
Grant date	Dec 1, 2015

Abstract

Systems and techniques for virtual device sharing. A failure of one of a plurality of memory devices corresponding to a first rank in a memory system is detected. The memory system has a plurality of ranks, each rank having a plurality of memory devices used to store a cache line. A portion of the cache line corresponding to the failed memory device is stored in a memory device in a second rank in the memory system and the remaining portion of the cache line in the first rank of the memory system.

First claim

What is claimed is:

1. A system comprising:
a memory controller;
a memory system coupled with the memory controller, the memory system organized as a plurality of ranks, each rank comprising a plurality of memory devices, wherein a selected rank from the plurality of ranks provides capacity to operate as a virtual spare device to store data;
wherein, in response to a failure of one of the plurality of memory devices, the memory controller to cause data to be written to the fa…

Assignees

• Morris Brian S
• Kottapalli Sailesh
• Intel Corp

Inventors

• Morris Brian S
• Kottapalli Sailesh

Classifications

• G06F11/1658 Primary

  Physics · mapped topic

• G06F11/20

  Physics · mapped topic

• G06F2201/815

  Physics · mapped topic

• G06F11/1666

  Physics · mapped topic

• G06F11/2094 Primary

  Physics · mapped topic