NAS
Ximeta attached storage (ATA-over-Ethernet like?)
http://forums.gentoo.org/viewtopic-t-413143-start-0-postdays-0-postorder-asc-highlight-ximeta.html?sid=753b2acbd41537103d958157365afd19
http://code.ximeta.com/trac-ndas/wiki
QNAS products
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=50011165+40000124&Manufactory=11165&SubCategory=124&SpeTabStoreType=0
HP Media Vault
http://www.k0lee.com/hpmediavault/
NAS distros
http://www.lime-technology.com/wordpress/?page_id=46