Demystifying ESI by defining key terms

By now you have most likely heard of the recent federal rule changes addressing electronically stored information.

If you haven't, fire up the computer and start Googling.  There is a lot of information that has been written on ESI in the past 12 months. 

If you are familiar with ESI and its preservation and collection, you may have heard terms thrown around like "bit-stream image," "file slack" or "unallocated clusters."  You may have even used the terms yourself without actually understanding what they mean.