Anyone using freebsd ZFS for large storage servers?

[Mark Felder]

I'm doing this with HP heads, LSI SAS adapters, and  
http://www.dataonstorage.com/ JBODs.

Note: the DataOn JBODs are very, very hard to get right now because these  
are really rebadged LSI devices and LSI sold this division to NetApp, who  
promptly shut it down to prevent people like us from making these types of  
storage backends. I don't know of anyone else who has stepped up to build  
similar devices using LSI parts.

http://www.netapp.com/us/company/news/news-rel-20110509-263500.html