ZFS practical application?

[Ed Flecko]

Hi folks,
I've been reading about the ZFS file system, and I'm having a hard
time understanding maybe the most practical business application(s)?

I think I understand a little bit about it (from a conceptual
perspective) that it's a self-healing 128 bit filesystem, better data
integrity checking, etc.

I have a small business (< 50 end users) and I'm wondering perhaps
some examples that you might think would be most applicable for a
FreeBSD server(s) and the ZFS filesystem?

One of the things that seems like might be a detriment as well as an
asset, is it's ability to expand as necessary, but then I'm wondering
what prevents the filesystem from just "running away"?

Are there any sites out there with perhaps a more laymen's explanation of ZFS?

Comments?

Thank you,
Ed