You can read the Wikipedia entry here on ZFS to get an idea on what the file system offers and its real eases as well.
From using ZFS on my FreeNAS there is one thing I would like to see added that would really “take it up a notch” in my book: the ability to add a disk to RAID-Z.
What I’m talking about is this situation:
- You have four external drive bays
- You fill three with 2 TB drives and setup RAID-Z
- You get a fourth 2 TB drive and plug it in
- You add it to the original RAID-Z and ZFS takes care of the rest
It is a lot like what Drobo has going for it, but on the file system level. You could add an arbitrary number of additional drives and ZFS would resize and just take over from there.
That would be really cool.