Replication to another machine that has a COW file system with snapshots is backup though :-)
We backup our data storage for an entire HPC cluster, about 2 PiB of it to a single machine with a 4 disk shelves running ZFS with snapshots. It works very well. Simple raunchy every night, and snapshotted.
We use the backup as a sort of Time Machine should we need data from the past that we deleted in the primary. Plus, we don’t need to wait for the tapes to load or anything.. it is pretty fast and intuitive
We backup our data storage for an entire HPC cluster, about 2 PiB of it to a single machine with a 4 disk shelves running ZFS with snapshots. It works very well. Simple raunchy every night, and snapshotted.
We use the backup as a sort of Time Machine should we need data from the past that we deleted in the primary. Plus, we don’t need to wait for the tapes to load or anything.. it is pretty fast and intuitive