Disk array system for suppressing disk fault

The invention relates to a diskarray system that has a diskarray controller (200) and a plurality of disk devices (500-504). Each of the disk devices (500-504) has a media (450), a head (460), and a head position controller (435). The diskarray controller (200) performs online data check operation,...

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Bibliographic Details
Main Author KANO AZUMA,OGAWA TAKUJI,TAKAMOTO KENICHI,TSUNEDA YOSHINORI,YAGISAWA IKUYA
Format Patent
LanguageEnglish
Published 26.09.2007
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
STATIC STORES
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Summary:The invention relates to a diskarray system that has a diskarray controller (200) and a plurality of disk devices (500-504). Each of the disk devices (500-504) has a media (450), a head (460), and a head position controller (435). The diskarray controller (200) performs online data check operation, and stops the online data check operation over the disk device (500-504) at first predetermined timing. After stopping the online data check operation, the diskarray controller (200) issues an unload enable command to the disk device (500-504) so as to move the head (460) to a position different from positions at which the head (460) reads or writes data from or to the media (450). The head position controller (435) of the disk device (500-504) moves the position of the head (460) on the basis of the received unload enable command.
Bibliography:Application Number: CN200410104118