Licensing issue is only for distribution. You're free to use it without breaching the license. Not sure why people won't just use it. How is zfs using too much

Licensing issue is only for distribution. You're free to use it without breaching the license. Not sure why people won't just use it. How is zfs using too much memory? zfs can run on a 2GB server (with some swap). Any laptop would have enough memory to run it. You might want to change "zfs_arc_max" as zfs tries to use half the memory available on a system if you don't set it and don't use deduplication.