I'm wondering what would be the best way to store archival data? A disk image plus compressed, encrypted then forward-corrected `btrfs-send` snapshots sounds q

I'm wondering what would be the best way to store archival data? A disk image plus compressed, encrypted then forward-corrected `btrfs-send` snapshots sounds quite efficient to me. Take your hourly, etc snapshots to a regular disk, write monthly ones to the tape until fills up, then take another tape and repeat. The downside is that you need to replay multiple diffs. Or would it be a good idea to make more frequent writes? I'm not sure what best practices are when it comes to tape and backup.