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To help reduce the amount of bandwidth needed to transmit Double-Take Move data, compression allows you to compress data prior to transmitting it across the network. In a WAN environment this provides optimal use of your network resources. If compression is enabled, the data is compressed before it is transmitted from the source. When the repository server receives the compressed data, it decompresses it and then writes it to disk.
By default, compression is set to None, which means it is disabled. The compression levels can be set at Minimum, Medium, or Maximum. Each level requires more overhead than the previous level of compression. If you notice an impact on performance while compression is enabled in your environment, either adjust to a lower level of compression or leave compression disabled.