Title:
オンドライブ統合化セクタ・フォーマットRAIDの誤り訂正符号システムおよび方法
Document Type and Number:
Japanese Patent JP4709485
Kind Code:
B2
Abstract:
An encoding system and associated method protect against miscorrection due to parity sector correction in, for example, an on-drive RAID system. The system adds a parity cluster block, which itself is a complete, C3-protected cluster. Having the cluster level, C4 level correction, by parity sectors, checked and verified by C3 checks that have high reliability level, as well as the capability for checking consistency of a cluster block, even in the presence of "jami" errors, makes this possibility unlikely. A scrub algorithm avoids read-modify-write operations by deferring the completion of the C2 and C3-ckecks until the storage device is idle.
Inventors:
Hideo Asano
Martin Aureliano Hassner
Niles nobert haize
Stephen Earl Hetzler
Remo-con Tetsuya
Martin Aureliano Hassner
Niles nobert haize
Stephen Earl Hetzler
Remo-con Tetsuya
Application Number:
JP2003384262A
Publication Date:
June 22, 2011
Filing Date:
November 13, 2003
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G06F11/10; G06F11/00; G11B20/18; G11B5/09; H03M13/00; H03M13/03; H03M13/11; H03M13/15; H03M13/29; H03M13/47
Domestic Patent References:
| JP2001160761A | ||||
| JP11238321A | ||||
| JP11127418A | ||||
| JP846913A | ||||
| JP8124322A | ||||
| JP3254240A |
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Yoshihiro City
Hiroshi Sakaguchi
Tasaichi Tanae
Yoshihiro City
Hiroshi Sakaguchi