DYNAMIC COMPRESSION FOR DATA REPLICATION

Abstract: storage arrays include inline compression hardware that can simultaneously implement multiple compression levels at line rate. for each compression level, compression efficiency is inversely related to processing efficiency. a compression level is dynamically selected for segments of replication data based on one or more of compression hardware utilization, network utilization, network latency, data compressibility, and io size. the compression hardware utilization may be maintained at or near full utilization. extents of data of a replica are analyzed based on compressibility. replication data that resides in an extent of relatively incompressible data, or that is associated with a relatively small io, may be compressed using a compression level characterized by greater processing efficiency.

Inventor(s): Owen Martin, Ramesh Doddaiah

CPC Classification: G06F16/27 (Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor)

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