backup/restore

In visiting the backup subject from some time ago, I have found that from most environment boots that are rescue type boots, there are two restores that seem to be available. 1. rsync, of course, and; 2. I have seen fsarchiver. Now I have never seen restore/dump in a rescue environment. So to me there is no reason to use it. rsync is very complicated but might be well worth the time and effort mastering. fsarchiver seems ok.     Other than that, clonezilla seems to be that best and fastest to me, for my purposes. As in incremental backups. dump/restore seems good, but rescue environments do not seems to have it, not the f37 workstation iso. Mastering find and using tar might be ok, but, no compression. Other than these two restore types, rsync and fsarchiver, is anyone familiar with a commonly available, rescue environment restore? B