Works for me
I been using them for a few years and am pretty happy with them. I don't know about some of the claims that they lost their data without notice. I get a daily status report and warnings if a drive han't been backed up for 48 hours. I think the time period is use selectable. As for restoring files I recently restored a version of a file from a few days ago as daily versions are kept.
While it won't backup VM files directly it will backup mapped drives which works ok for me.
The backup service doesn't always seem to start with windows & needs to be manually started from time to time. As an inexpensive small business option, and my the only backup, it's ok for me.