Method and apparatus for data duplexing in storage unit system

Details Method and apparatus for data duplexing in storage unit system Method and apparatus for data duplexing in storage unit system

2006-06-27

2006-06-27

Nguyen, Hiep T. (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

Reexamination Certificate

active

07069403

ABSTRACT:
With the purpose of achieving consistent non-synchronous copying of data from a plurality of primary side control units to a plurality of secondary side control units, all of the secondary side control units are connected via a loop, and each of the secondary side control units determines guarantee time by circulating a time added to the data received from the primary side control units via said loop communication route. A consistent data copying is guaranteed by circulating the determined guarantee time via the loop communication route.

REFERENCES:
patent: 5799141 (1998-08-01), Galipeau et al.
patent: 6260124 (2001-07-01), Crockett et al.
patent: 6408370 (2002-06-01), Yamamoto et al.
patent: 2001/0010070 (2001-07-01), Crockett et al.
“Digital Equipment Announces StorageWorks: Capacity Breakthrough for DSSI Systems Customers,” Digital Equipment Corporation press release (Mar. 1994). 2 pages.

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