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US 2015/0089328 A1Published application
Flex Erasure Coding of Controllers of Primary Hard Disk Drives Controller
AssigneeFuturewei Technologies, Inc.
InventorsXiaobing Lee, Chunlei Dong, Yong Chen, Jinshui Liu
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Abstract
System and method embodiments are provided for managing storage systems. In an embodiment, a storage system includes an over-provisioned redundant array of independent disks (RAID); and a flexible erasure coding controller coupled to the RAID, the controller comprising a flexible exclusive-or engine configured to provide erasure coding for the over-provisioned RAID using M-parity convolution codes.
Claims17
A storage system comprising:
- an over-provisioned redundant array of independent disks (RAID);
- and
- a flexible erasure coding controller coupled to the RAID, the controller comprising a flexible exclusive-or engine configured to provide erasure coding for the over-provisioned RAID using M-parity convolution codes.
A method of managing storage in a data processing system, the method comprising:
- protecting static blocks in a redundant array of independent disks (RAID) with over-provisioning of over-provisioned parity disks;
- coding the RAID with a flexible erasure coding with M-parity convolution codes (MPCC);
- rebuilding a dead block in the RAID on-the-fly when the block is read;
- and
- using, for hot blocks, over-provisioned parity blocks as spare blocks to save just-being-rebuilt blocks for further normal reads.
2 more elements
A network component configured to manage a storage system, comprising:
- a processor;
- and
- a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
- over-provision a redundant array of independent disks (RAID) with over-provisioned parity disks to protect static blocks in the RAID;
- code the RAID with a flexible erasure coding with M-parity convolution codes (MPCC);
- rebuild a dead block in the RAID on-the-fly when the block is read;
- and
- use, for hot blocks, over-provisioned parity blocks as spare blocks to save just-being-rebuilt blocks for further normal reads.
5 more elements
Dependencies are inferred from the claim text.