Batch based distributed data redundancy

Details Batch based distributed data redundancy Batch based distributed data redundancy

2007-01-16

2007-01-16

Beausoliel, Robert W (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C718S101000, C711S162000

Reexamination Certificate

active

10456863

ABSTRACT:
Techniques for performing data redundancy operations in a distributed manner. A primary data storage facility stores a primary copy of data and a secondary facility stores data that is redundant of the primary copy of the data. The primary facility includes a first redundancy appliance that receives a first sequence of write requests and stores data for the first sequence of write requests in mass storage associated with the first redundancy appliance. A second redundancy appliance receives a second sequence of write requests and stores data for the second sequence of write requests in mass storage associated with the second redundancy appliance. Thus, a workload is shared among the first and second redundancy appliances by dividing the workload into the first and second sequences of write requests, where each sequence is handled by a different redundancy appliance. Because the operations are distributed in such a facility, it is expected that the facility will be able to accommodate a larger workload than otherwise (e.g., having a higher storage request rate or requiring additional storage capacity).

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