In short, many of them lack some of the functionality that is required to make the collection process defensible on court
As new data is produced after the initial copy, some eDiscovery software tools provide automatic collection of incremental copies from the legal hold sources
This is very problematic if a web search tool is used for e-discovery collections
One better: these teams walk through a multitude of different collection scenarios proactively, effectively creating use-cases
Automatic and recurring collection of data, not only by location, file name, extension, and MIME type, but also by using full-text search to collect only relevant documents that match the negotiated Boolean
Connecting this policy engine to the document collection tools and repositories, records management systems, structured data archives, eDiscovery tools, tiered storage archives, etc., provides the instrumentation which is needed to monitor the data growth, execute the policies and provide the auditability and defencibility that is needed to justify regular content purging
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