Electrical computers and digital processing systems: memory – Storage accessing and control – Access timing
Reexamination Certificate
2005-06-17
2009-10-13
Shah, Sanjiv (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Access timing
C711S114000, C711S118000, C711S151000, C711S158000, C711S203000, C709S217000, C709S219000, C709S225000, C709S229000
Reexamination Certificate
active
07603533
ABSTRACT:
A method of and system for protecting a disk drive or other data storage includes mounting a virtual storage that combines a full access temporary storage and a READ-only portion of a main storage, wherein the READ-only portion represents a protected area of the main storage; generating a bitmap for blocks of the virtual storage; redirecting virtual storage write requests to the temporary storage; marking, in the bitmap, blocks of the virtual storage corresponding to blocks of the temporary storage that are being written to; redirecting, to the READ-only portion, read requests for unmarked blocks; redirecting, to the temporary storage, read requests for marked blocks; upon an acceptance of a state of the virtual storage, merging the temporary storage with unmarked blocks of the READ-only portion of the main storage, to form an integral storage; and upon a rejection of a state of the virtual storage, terminating the redirecting. Optionally, data in the temporary storage can be archived.
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Beloussov Serguei M.
Lyadvinsky Maxim V.
Tormasov Alexander G.
Tsypliaev Maxim V.
Acronis Inc.
Bardmesser Law Group
Rojas Midys
Shah Sanjiv
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