METHOD FOR HIGH SPEED CONTROL OVER BLOCKS FOR INSTANT COPYING IN DATA STORAGE SYSTEMS WITH JOINT USAGE OF MEMORY BY N UNITS Russian patent published in 2007 - IPC G06F9/46 

FIELD: engineering of computers for controlling memory, in particular, external memory controllers.

SUBSTANCE: memory control device for operation in memory controller network contains memory controller being an owner unit, capable of controlling the blocking of certain data area during execution of input-output outputs, and component for exchanging messages, providing for transmission of at least one message with blocking request, permission of blocking, blocking removal request and blocking removal signal, and also input-output component, while any image of aforementioned data area, received by instant copying thereof, is maintained as coherent relatively to data area itself, and input-output component may position previous direct confirmation, that this data area remains coherent to any such image, to cash-memory, and may perform input-output operations on basis of aforementioned previous direct confirmation. Method describes operation of aforementioned device. Software product for computer is realized on machine-readable carrier and contains a program recorded thereon, realizing operations of aforementioned method.

EFFECT: expanded functional capabilities.

3 cl, 3 dwg