To realize speeding up of rebuild/copy back processing without inhibiting processing of normal I/O, in a RAID system accessing a physical disc, and carrying out rebuild/copy back processing in response to a host I/O request.
When one disc device 200 fails of a plurality of disc devices 200 with a RAID configuration, a rebuild/copy back processing size for one time to reconfigure RAID is changed in response to existence or nonexistence of a normal I/O managed by RAID control 632. By this, if there is a normal I/O, the rebuild/copy back can be carried out without inhibiting processing of the normal I/O, and in a static state without a normal I/O, a larger processing size is specified, and speeding of the rebuild/copy back processing can be realized.
ITO MIKIO
IKEUCHI KAZUHIKO
MOCHIZUKI SHINYA
TAKAHASHI HIDEO
KONTA YOSHIHITO
SATO YASUTAKE
OCHI HIROAKI
MAKINO TSUKASA
KUBOTA NORIHIDE
| JPH05165581A | 1993-07-02 | |||
| JPH05204554A | 1993-08-13 | |||
| JP2002202857A | 2002-07-19 | |||
| JP2003108317A | 2003-04-11 | |||
| JPH10111766A | 1998-04-28 |
Kenji Doi
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