As a consultant on a DR project, you can increase your billables by 10x due to the extremely slow backup restore speeds.

Backing up anything Windows with more granularity than top level directories?

Ugh.

Try picking a choosing specific file types or file extensions from filesystems holding thousands of files.

I ended up having to cobble together some god-awful pre-process powershell with multiple pipes just because restic fails to be able to grep using Windows reliably.

:(

With regards to restic, Tarsnap preforms asymmetric encryption which lets you perform automated backups without needing to enter any passwords (or otherwise storing your encryption passwords in plain text).

With regards to duplicity, Tarsnap does full deduplication across all backups for any given "machine", while still letting you independently remove any snapshots you like. i.e. no special "full snapshot" that must always be kept around, and no need for multiple full snapshots that have no deduplication between them.

The complexity with S3 or Backblaze B2 is the granular pricing for various operations on the service. It’s difficult to optimize costs compared to a fixed “$X per GB” pricing that’s easier for people to understand and forecast expenses a bit more easily. Other than that, rsync.net provides the same pricing for different days center locations, which means there is some subsidization going on.

There are services like rsync.net that support borg at a lower price. Borgbase is one of them. I haven’t used either of these.

I treat zfs far more reliable than restic which is still rough around the edges the last time I tried a few years ago.

Run rsync to the target and forget is quite easy, though I admit rsync.net's deal is getting worse these days posing minimum usages here and there.