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Index Engines Inc.
Index Engines differentiates itself from all the other vendors cited here because of its focus on performance and scalability. It's the only vendor that can process data at "wire speed," and its appliances for SANs, LANs and tape drives can reside inline between a SAN target and a backup server. The products scale to handle a very large environment of multiple servers and geographical locations managed through a single interface. Products can also classify data on tapes and provide retrieval from tape media. Index Engines doesn't provide canned actions for migration, retention, litigation hold and so on, but it does have a published open API that allows storage vendors and end users to integrate other products with its search and reporting engine.
If speed and flexibility are your primary requirements, and you can create your own integrated data management routines, Index Engines may be a good choice. Its offerings are designed for users with a technical focus. The products can best be described as toolboxes; to use them you'll need to write your own programs to their APIs to perform actions on your data, or wait for some of its OEM relationships to bear fruit. Its products outperform the other vendors when installed inline, but for a full-featured data management suite that queries data at rest, this may not be the product for you.
This was first published in November 2006