Using bandwidth and capacity parameters to control remote...

Details Using bandwidth and capacity parameters to control remote... Using bandwidth and capacity parameters to control remote...

2004-11-01

2009-08-18

Thai, Tuan V (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S100000, C711S114000, C711S162000, C707S793000

Reexamination Certificate

active

07577805

ABSTRACT:
A system is provided for storage of journal data from a primary site to a secondary site with a predefined quality of service. In one implementation, the primary storage system stores information for updating data stored on the primary disk array in the form of a history of updates made to the data. The primary storage system is configured to transfer this journal information to the secondary storage system. The user can specify the quality of service desired using a variety of measures, for example, a recovery point objective or a recovery time objective. In response, a copy manager within one of the storage systems determines the capacity of the various primary and secondary volumes, and determines the copy rate available, typically dependent upon the bandwidth between the primary and secondary systems. The copy manager then copies journal data to the remote site where it is stored.

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