Storage control and computer system using the same

Details Storage control and computer system using the same Storage control and computer system using the same

1997-06-02

1999-07-06

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

711147, 711163, 711170, 711206, 395494, 395878, 39520008, 360 48, 360369, G06F 1200

Patent

active

059208937

ABSTRACT:
A storage control enables data on various storage media to be shared among host computers having various different host computer input/output interfaces. A control processor checks a host computer interface management table when write is requested by a host computer (HCP). The control processor writes write data in a cache slot of the cache memory without converting the format if the data format of the HCP is in an FBA format and it converts the format into the FBA format and writes it when the data format of HCP is in a CKD format. The processor checks a table when read is requested by HCP. If the data format of HCP is FBA, the processor transfers the read data read from the cache slot without converting it and if it is CKD, the processor converts the format into the FBA format and transfers the format converted data. The control processors, retrieve write data in the cache memory and writes it in a drive.

REFERENCES:
patent: 5206939 (1993-04-01), Yanai et al.
patent: 5581743 (1996-12-01), Burton et al.
patent: 5664144 (1997-09-01), Yanai et al.
patent: 5724542 (1998-03-01), Taroda et al.
patent: 5778349 (1998-07-01), Okonogi

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