Software compression includes options to compress data in the following entities:
Software compression is available for all storage media. For Auxiliary Copy operations, data is copied in the compressed state.
You can use the LZO compression scheme or the GZIP compression scheme. GZIP is the default compression scheme, but you can use an additional setting to change the compression scheme on a client. For more information, see Configuring the Compression Scheme.
Client compression is useful if the client and MediaAgent reside on separate computers and the client must send its data using a network. Client compression reduces the network load since the data is compressed before it leaves the client.
When compression is configured on the client:
- The data is compressed on the client computer.
- The compressed data is then sent to the MediaAgent which is written to the storage media.
MediaAgent compression can be useful if the MediaAgent software resides on a computer that is more powerful than the client computer. Using software to compress data can be processor intensive. Consequently, you may want to use MediaAgent compression for client computers with limited processing power.
When compression is configured on the MediaAgent:
- The data is compressed on the MediaAgent.
- The compressed data is then sent from the MediaAgent to the storage media.
The data compressed on the MediaAgent during data protection, is decompressed on the client computer during the data recovery.
Data being replicated can be compressed between the source and destination computers. When compression is enabled, data is compressed on the source computer, replicated across the network to the destination computer, and uncompressed on the destination computer, thereby reducing the network load.
Last modified: 5/17/2018 5:07:39 AM