Consistent updates across storage subsystems coupled to a...

Details Consistent updates across storage subsystems coupled to a... Consistent updates across storage subsystems coupled to a...

2006-04-06

2009-08-04

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C710S072000, C710S073000, C711S161000, C711S162000, C714S001000, C714S013000

Reexamination Certificate

active

07571268

ABSTRACT:
Provided are a method, system, and article of manufacture, wherein a primary control unit sends a selected time to a plurality of secondary control units. Clocks are periodically synchronized at the primary control unit and the secondary control units with a time server. The primary control unit and the plurality of secondary control units consistently update secondary storage subsystems coupled to the plurality of secondary control units at the selected time.

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U.S. Patent Application entitled “Method, System, and Program for Forming a Consistency Group”, U.S. Appl. No. 10/676,852, filed Sep. 29, 2003, by inventors G.A. Spear, R.F. Bartfai, E.H-W. Lin, W.F. Micka, O. Gluck, A. Zlotnick, M.E. Factor and T.C. Jarvis.
PCT International Search Report and Written Opinion mailed Jun. 5, 2007 for Application No. PCT/EP2007/052627 filed Mar. 20, 2007.

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