公开(公告)号：AT326719T

公开(公告)日：2006-06-15

申请号：AT03745201

申请日：2003-03-03

Applicant: IBM

Inventor： APPERLEY NORMAN ,  LEGG STEPHEN PETER ,  SHAH VINAY VELJI

IPC: G06F1/18 ,  G06F3/00 ,  G06F3/06 ,  G06F13/36 ,  G06F13/38

Abstract: An adapter for converting an interface of a data storage device is provided. The adapter has a first interface for connection to the interface of the data storage device and a second interface for connection to one or more host systems. The adapter includes a processor for converting commands and data between the first and second interfaces. The adapter transforms the data storage device to emulate physically and logically a higher availability and higher performance native data storage device. The adapter has a first connector compatible with the first interface for attachment to the data storage device and a second connector compatible with the second interface for attachment to the one or more host systems. The first and second connectors are disposed in the adapter in a back to back arrangement. The adapter logically separates commands for the data storage device from commands for the adapter.

公开(公告)号：AU2003215727A1

公开(公告)日：2003-10-13

申请号：AU2003215727

申请日：2003-03-03

Applicant: IBM

Inventor： APPERLEY NORMAN ,  LEGG STEPHEN PETER ,  SHAH VINAY VELJI

IPC: G06F1/18 ,  G06F3/00 ,  G06F3/06 ,  G06F13/36 ,  G06F13/38

Abstract: An adapter for converting an interface of a data storage device is provided. The adapter has a first interface for connection to the interface of the data storage device and a second interface for connection to one or more host systems. The adapter includes a processor for converting commands and data between the first and second interfaces. The adapter transforms the data storage device to emulate physically and logically a higher availability and higher performance native data storage device. The adapter has a first connector compatible with the first interface for attachment to the data storage device and a second connector compatible with the second interface for attachment to the one or more host systems. The first and second connectors are disposed in the adapter in a back to back arrangement. The adapter logically separates commands for the data storage device from commands for the adapter.

公开(公告)号：DE69314739D1

公开(公告)日：1997-11-27

申请号：DE69314739

申请日：1993-08-31

Applicant: IBM

Inventor： JONES J WYN ,  LEGG STEPHEN PETER ,  NEWMAN ERIC LEWIS

IPC: G06F3/06 ,  G11B19/28 ,  G11B20/18 ,  G11B27/10 ,  G11B27/30

Abstract: A synchronisation technique is described which finds use in a disk array subsystem comprising a plurality of disk storage devices connected to a controller. In response to signals from each of the devices specifying their angular position at a particular time, the controller calculates the relative angular positions of the devices and issues a signal to each of the devices specifying the amount and direction of change in rotational velocity required to achieve synchronisation. In a two device subsystem, the signal to one device will specify a speed decrease and the signal to the second device will specify a speed increase.

公开(公告)号：GB2270790A

公开(公告)日：1994-03-23

申请号：GB9219762

申请日：1992-09-18

Applicant: IBM

Inventor： JONES J WYN ,  LEGG STEPHEN PETER ,  NEWMAN ERIC LEWIS

IPC: G06F3/06 ,  G11B19/28 ,  G11B20/18 ,  G11B27/10 ,  G11B27/30 ,  G11B15/46

Abstract: A synchronisation technique is described which finds use in a disk array subsystem comprising a plurality of disk storage devices connected to a controller. In response to signals from each of the devices specifying their angular position at a particular time, the controller calculates the relative angular positions of the devices and issues a signal to each of the devices specifying the amount and direction of change in rotational velocity required to achieve synchronisation. In a two device subsystem, the signal to one device will specify a speed decrease and the signal to the second device will specify a speed increase.