Method for ensuring data coherency for redundat storage by trans

Details Method for ensuring data coherency for redundat storage by trans Method for ensuring data coherency for redundat storage by trans

1996-12-12

1998-12-01

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

39518204, 39518203, G06F 1216

Patent

active

058453288

ABSTRACT:
A command is issued from a processing unit to an on-line storage unit and transferred from the on-line storage unit to a back-up storage unit. The received commands are processed in the respective storage units. An overhead of the on-line storage unit is reduced in a hot stand-by system. Storage contents of the on-line storage unit and the back-up storage unit are made coincident in a structure having a plurality of processing units, where the on-line storage unit and the back-up storage unit are connected through a channel device.

REFERENCES:
patent: 4577272 (1986-03-01), Ballew et al.
patent: 5193154 (1993-03-01), Kitajima et al.
patent: 5226157 (1993-07-01), Nakano et al.
patent: 5313612 (1994-05-01), Satoh et al.
patent: 5317739 (1994-05-01), Elko et al.
patent: 5537574 (1996-07-01), Elko et al.
patent: 5548711 (1996-08-01), Brant et al.

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