Index Engines announced the commercial availability of an enterprise search appliance that indexes data inline with the existing backup process. Unlike traditional enterprise search solutions that crawl networks and desktops in order to find data, the Index Engines Appliance sits in the path of the data backup and transparently indexes data as it is flows through the storage network. The Index Engines Appliance shifts the indexing of unstructured data off the overburdened data network and onto the storage network, where file and email are collected and archived using existing backup procedures. The Index Engines Appliance supports the most common file types including, Microsoft Office files, text, html, Adobe PDF, compressed zip files and more. Additionally a beta version that includes support for Microsoft Exchange email as well as PST files is also available. The Index Engines Appliance is available in two models. The ES-100 model supports the indexing of four million files and sells for $29,500. The ES-200 model supports eight millions documents and sells for $34,500.