公开(公告)号：JPH06267192A

公开(公告)日：1994-09-22

申请号：JP18468593

申请日：1993-07-27

Applicant: IBM

Inventor： DANA HENRII BURAUN ,  KEBUIN JIYATSUKU ERITSUKUSON ,  DANIERU ERU GUTSUDO ,  RICHIYAADO GURIINBAAGU ,  PIITAA MOORISU HERUMAN ,  HARU JIYARUMAA OTSUTESEN

IPC: G06F3/06 ,  G06F12/16 ,  G11B19/04 ,  G11B19/12 ,  G11B20/10 ,  G11B20/18

Abstract: PURPOSE: To prevent the data loss due to a shock by buffering data on adjacent tracks before write and stopping the write based on discrimination of data damage on adjacent tracks due to the shock during write and restoring data after the halt due to the shock. CONSTITUTION: Before the start of the write operation meeting a request of a microprocessor 64 of a computer system 60, data on tracks adjacent to a target track of a designated disk is stored in a buffer 78 of a device controller 72 having a processor unit 76 to which a disk drive 79 is connected. If off-track due to a mechanical shock after the start of write is detected, the write of data is stopped, and it is discriminated whether data on adjacent tracks is damaged or not, and data on adjacent tracks is restored, based on data in the buffer 78 after the halt due to the shock. Thus, the data loss due to the mechanical shock is prevented.