Retrospect has been in the backup game a long time, which speaks to its top-tier reliability and feature set.

Retrospect 17, one of the most comprehensive backup programs you can find, is the latest incarnation of a venerable, capable, and reliable program that PCWorld has actually used to back up its content in the past. The Solo version I tested offers the same file backup and disaster recovery and vast media type support I became used to, but adds modern niceties such as online storage, storage pool support, and more. It served us well once, and will serve you well if you need its advanced feature set.
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https://www.pcworld.com/article/3533335/retrospect-17-solo-backup-software-review.html