Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1997-10-29
2000-04-25
Beausoliel, Jr., Robert W.
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
G06F 1100
Patent
active
060556463
ABSTRACT:
A plurality of disk array systems are realized in a single disk array apparatus, and double protection of disk arrays is achieved, whereby reliability is enhanced. Row-directional hard disk drives (HDD) connected to hard disk (HD) controllers constitute RAID4 groups. Column-directional HDDs constitute RAID3 groups. A disk region of each HDD is divided into a RAID3&4 region for storing large-volume data which is used repeatedly for a long time period, a RAID3 region for storing large-volume data which is used only for a predetermined time period, and a RAID4 region for storing small-volume data. The RAID3&4 region is protected by RAID3 and RAID4, the RAID3 region is protected by RAID3, and the RAID4 region is protected by RAID4.
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Kanai Tatsunori
Shimanouchi Yoshiro
Uchihori Ikuo
Beausoliel, Jr. Robert W.
Elmore Stephen C.
Kabushiki Kaisha Toshiba
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