> currently ZFS is only available on Solaris, parts of it have been released
> under GPLv2, but it doesn't look like enough of it to be ported to Linux
> (enough was released for grub to be able to access it read-only, but not
> the full filesystem). there are also patent concerns that are preventing
> any porting to Linux.
I don't know if anyone mentioned this in the thread already, but it looks
like ZFS may be coming to MacOSX 10.5
http://news.worldofapple.com/archives/2006/12/17/zfs-file-system-makes-it-to
-mac-os-x-leopard/