Geo–Replicator. About the technology. Epsilon Compression.

Epsilon Compression is a patented, industry-leading compression technology. It provides highly bandwidth-efficient replication of large volumes of data, no matter what type of content, by ensuring that equivalent sequences of bytes of data are never transmitted on the network twice. Epsilon compression has been shown to out-perform other industry technologies, such as delta level differencing, by an order of magnitude because delta differencing is limited to comparing pairs of files with the same name.

Differencing with a difference

Epsilon provides byte level differencing, supported by pattern matching. Where it differs from its nearest competitor - delta-based differencing - is in the fact that it doesn’t simply work within a single file, web page or document, but instead compresses across an entire Geo-Replicator Publication. For instance, if a new presentation is published in a portal, traditional differencing techniques would have nothing to difference the presentation against. With Epsilon Compression, the presentation is differenced against all the other content already held in the Geo-Replicator Publication, regardless of file or data type. Typically this would mean that Epsilon would find that over 95% of the content of a new presentation already exists in other presentations or documents, and would reduce, for example, a 10 megabyte presentation to under 500 kilobytes. Then, using Epsilon’s byte level compression algorithms, the data is compressed further, reducing the 500 kilobytes in the example to less than 200 kilobytes, giving an overall compression ratio of over 98%. On a slow network this data deduplication translates to over 50 times faster transfers.