Data transfer between small computer system interface systems

Details Data transfer between small computer system interface systems Data transfer between small computer system interface systems

1998-03-27

2000-02-01

Ray, Gopal C.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710128, 709200, 709231, G06F 1300

Patent

active

060214546

ABSTRACT:
The invention improves fault tolerance by physically separating computer systems that are connected by a Small Computer System Interface (SCSI). The invention includes a data transfer system that receives the data from the computer over a first SCSI bus and then releases the first SCSI bus. The data transfer system transfers the data within the data transfer system over a non-SCSI connection, such as a Fiber Channel link. The data transfer system then transfers the data to the disk drive over a second SCSI bus. The data transfer system releases the first SCSI bus before transferring data over the second SCSI bus. Thus, the first SCSI bus and the second SCSI bus are not reserved at the same time for the data transfer. The data transfer system eliminates deadlock because the simultaneous use of both SCSI buses is not required.

REFERENCES:
patent: 5257391 (1993-10-01), DuLac et al.
patent: 5524268 (1996-06-01), Geldman et al.
patent: 5732223 (1998-03-01), Moore et al.

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