DATA REPLICATION WITH DYNAMIC COMPRESSION

摘要

A method for replicating data between two or more network connected data storage devices, the method including dynamically determining whether to compress data prior to transmitting across the network based, at least in part, on bandwidth throughput between the network connected data storage devices. If it has been determined to compress the data, the method involves compressing the data and transmitting the compressed data over the network. If it has been determined not to compress the data, the method involves transmitting the data, uncompressed, over the network. Dynamically determining whether to compress data may include comparing bandwidth measurements with a predetermined policy defining when compression should be utilized. In some embodiments, the policy may define that compression should be utilized when an estimated time for compressing the data and transmitting the compressed data is less than an estimated time for transmitting the data uncompressed.

主权项

1. A method for replicating data between two or more network connected data storage devices in a data storage subsystem, the method comprising:
dynamically determining whether to compress data prior to transmitting across the network from a first network connected data storage device to a second network connected data storage device based, at least in part, on bandwidth throughput between the first and second network connected data storage devices; and if it has been determined to compress the data, compressing the data and transmitting the compressed data from the first network connected data storage device to the second network connected data storage device; else if it has been determined not to compress the data, transmitting the data, uncompressed, from the first network connected data storage device to the second network connected data storage device.