Can so. tell me if fuse-ZFS is more trouble than it's worth?
I've tried both fuse-ZFS, and also zfs installed from rpm's on zfsonlinux.org. Both on centos 5.5.
fuse-ZFS is more polished, but cut write speeds in half on my raid 5.
I ended up going ext4.
SME Server is great by the way - been using it for years.