CRC check error in back up


Just tried to restore last night's back up to the training database and I am
getting 33 of the follwoing errors:
CRC check error reading backup block #### (1147)

I am getting them in blocks of 10, and #### is a growing number in the 3000
range. Afterwards I see a very brief message that my backup has failed (no

I can't pull up Epicor's answerbook at the moment, can anyone tell me how to
solve this?