What do you like best?
Retrospect does what it claims to do -- reliable, fast backups without too much complexity. If you need to backup multiple machines in a SMB environment retrospect will do it. Handles "time machine"-like functionality of being able to restore to a particular point in time. Able to backup to an offsite facility (in addition to cloud backup). Can backup to tape or tape library.
What do you dislike?
Somewhat non-intuitive for setup. Cloud backup could be smarter, but does work. Reporting could be a little easier to used.
Recommendations to others considering the product
Of all the SMB backup products I've looked at or used, this is a pretty good balance between features and ease of use. The pricing is reasonable compared to enterprise backup software. If you have less than 100 machines that you need to backup this is a good choice., and certainly if you have between 5 to 10 it's an excellent choice. If you need a solution that works reliably with Macs I'd also recommend this.
What business problems are you solving with the product? What benefits have you realized?
We use retrospect to back up a mixed environment of Windows desktop and servers, Mac desktops, Linux servers. Need ability for permanent archive of all files, so use LTO tape. Our backup machine isn't added as a share, so I feel there is additional security if we are hit with something like crypto virus.