Composite drive controller including composite disk driver for s

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Other Related Categories

395500, 395835, 3642362, 3642683, 3649442, 3649447, G06F 1116, G06F 1516

Type

Patent

Status

active

Patent number

055487831

Description

ABSTRACT:
A drive array controller is provided that serves as an interface between both stand-alone SCSI devices as well as SCSI devices that form a composite drive. Since an AHA emulation interface is incorporated on the drive array controller, the drive array controller is compatible with conventional AHA device drivers that drive stand-alone peripheral devices such as SCSI CD-ROM units and SCSI tape drives. The drive array controller includes a SCSI pass-through driver that extracts a SCSI command descriptor block from a command control block created by the AHA device driver. The drive array controller further provides a separate peripheral access channel to support high speed composite drive operations through a composite device driver. Since the AHA emulation interface and a composite drive interface are provided on a common peripheral board, only one EISA expansion slot is occupied.

REFERENCES:
patent: 4453211 (1984-06-01), Askinazi et al.
patent: 5278973 (1994-01-01), O'Brien et al.
patent: 5335326 (1994-08-01), Nguyen et al.
patent: 5404462 (1995-04-01), Datwyler et al.

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