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Re:CrashPlan is exiting the consumer market by domador on Tuesday August 22, 2017 @04:43PM (#15076201)
Without some form of versioning, there's always the risk that the only backed-up copy of a file is a corrupted, useless version. This is the best summary of everything else I've said here.
Re:CrashPlan is exiting the consumer market by alphapapa on Wednesday August 23, 2017 @08:44AM (#15081019)
Indeed, I nearly lost my GPG key due to undetected corruption, because the corrupted file had been backed up for a long time. I only recovered it from a very old CD-R backup I made years earlier.

Keeping old snapshots (e.g. one or two per year) is an absolute must.