[TheNewsIsHere]

If you’re looking to ZFS send streams for many of ZFS’s guarantees, absolutely.

However ZFS replication was originally designed with the assumption and use case in mind that organizations would store the send streams as opaque blobs on tape. This is, in part, why storing send streams as blobs is still a thing people do.

There are some use cases where this makes sense. I’ve stored full send streams of archived ZFS file systems in S3(-compatible services) where integrity is handled at the platform level. In that use case I didn’t benefit from having every copy of the filesystem in question running on live storage media, and incremental sends/snapshots weren’t on the table. (I also SHA checksummed the resulting files, and did restore tests.)

There is also a misconception that frequently gets brought up in the ZFS community that the send stream format isn’t stable between versions and cannot be relied upon in future, but it absolutely is stable. In fact the ZoL manpage for send explicitly states that it is. As with anything in ZFS though, you want to move versions forward or not at all, rather than backward.

[ticklyjunk]

we are writing blobs/ objects to zfs tape volumes. it gives us an extra layer of defense from ransom attacks and satisfies our 321 requirement. We make the blobs transparent with some metadata tags. The objects are recorded in the catalog and we can pull individual files out of the blob. deepspace storage manages the tape gateway and catalog for the objects. short answer yes storing send streams to tape is doable robust workflow.