It's a bit of a shame that things have been so quite around here. I came with more or less the same question. It seems that there are TONS of raid solutions out there. Not so many JBOD. Based on my read of the DAM book years ago, I have been working on JBODs for several years... but just the lack of available hardware is leading me to think that I might need to switch my approach
Having said that, I did find ONE solution. OWC makes a rack system that can be mounted JBOD with esata.
I don't find the rack system too appealing, but it is one option.http://www.bhphotovideo.com/bnh/controller/home?O=&sku=819990&Q=&is=REG&A=details