SpanFS, I assume you have it addresses the storage of not really hot data, so it's warm to cold data. It addresses the immutable data, the data efficiency storage. Even the speed of redrawing or getting the data back, though the data is stored for a long time, can sometimes be a problem, especially if you look at more traditional solutions like, for example, Data Domain from Dell EMC or something.

It is used as a storage repository for SQL backups, and we also do some S3 repositories.