公开(公告)号：CA2034904A1

公开(公告)日：1991-10-01

申请号：CA2034904

申请日：1991-01-24

Applicant: IBM

Inventor： BEST JOHN S ,  CHAINER TIMOTHY J ,  GLASER THOMAS W ,  GREENBERG RICHARD ,  MUKHERJEE AVIJIT ,  NEUBAUER JERRY L ,  REIDENBACH JOHN R ,  SCHOPP ROBERT E ,  SCRANTON ROBERT A

IPC: G11B20/12 ,  G06F3/06 ,  G06F11/00 ,  G06F11/10 ,  G06F11/20 ,  G11B20/18 ,  G11B33/02 ,  G11C29/00 ,  G11B5/012

Abstract: A disk drive storage system comprises an array of disk drive units (230). The disk drives (160) contained in the units have a diameter of 65mm and rotate at 10,000 RPM which has the effect of reducing latency. In a preferred embodiment data and corresponding parity information are converted into portions and stored on a respective different one of the disk drive units. Data stored on a filed disk drive unit can be regenerated on a replacement disk drive unit. A disk drive unit can be replaced without powering down the system. Four disk drive units can be arranged in a four drive system to match the space geometry of the traditional half-high flexible disk drive used in a personal computer.

公开(公告)号：CA2027992C

公开(公告)日：1994-11-29

申请号：CA2027992

申请日：1990-10-18

Applicant: IBM

Inventor： GLASER THOMAS W ,  GREENBERG RICHARD ,  OTTESEN HJALMAR H

IPC: G06F3/06 ,  G06F11/20 ,  G11B19/12 ,  G11B19/28 ,  G11B20/12 ,  G11B27/00 ,  G11B27/10 ,  G11C29/00

Abstract: A data processing system is disclosed having a direct access storage device (DASD) subsystem comprising a number of separate physical housings, each housing having a number of disk supporting spindles mounted therein. The velocity of rotation of the spindles within a housing is synchronized, and the rotational position of the spindles may be locked into a fixed relationship. When number N of disk supporting spindles are provided, spindle rotation is synchronized, and mirrored data files are written out of phase by 360/N degrees, thereby providing reduced latency time during a subsequent read operation, while at the same time providing data integrity through the use of redundant data files.

公开(公告)号：CA2034904C

公开(公告)日：1995-07-18

申请号：CA2034904

申请日：1991-01-24

Applicant: IBM

Inventor： BEST JOHN S ,  CHAINER TIMOTHY J ,  GLASER THOMAS W ,  GREENBERG RICHARD ,  MUKHERJEE AVIJIT ,  NEUBAUER JERRY L ,  REIDENBACH JOHN R ,  SCHOPP ROBERT E ,  SCRANTON ROBERT A

IPC: G11B20/12 ,  G06F3/06 ,  G06F11/00 ,  G06F11/10 ,  G06F11/20 ,  G11B20/18 ,  G11B33/02 ,  G11C29/00 ,  G11B5/012

Abstract: A high speed, small diameter disk storage system having a plurality of disk drive devices utilizing disks with a nominal 65mm diameter rotated at a speed of approximately 10,000 RPM which can be optimally arranged in a four drive system to match the space geometry of the traditional half-high flexible disk drive used in a personal computer.