How so? I can easily just delete the whole s3 bucket.

I’m aware, but I myself have < 3TB and if I actually need it I’ll be more happy to pay. It’s my “backup of last resort”, I keep other backups on site and infrequently on a portable HDD offsite.

I use aws s3 deep archive storage class, $0.001 per GB per month. But your upload bandwidth really matters in this case, I only have a subset of the most important things backed up this way otherwise it would take months just to upload a single backup. Using rclone sync instead of just uploading the whole thing each time helps but you still have to get that first upload done somehow…

I have complicated system where:

• borgmatic backups happen daily, locally
• those backups are stored on a btrfs subvolume
• a python script will make a read-only snapshot of that volume once a week
• the snapshot is synced to s3 using rclone with --checksum --no-update-modtime
• once the upload is complete the btrfs snapshot is deleted

I’ve also set up encryption in rclone so that all the data is encrypted an unreadable by aws.

only windows (maybe mac)