there is 23 model that are twin model in 1U: http://www.supermicro.com/products/nfo/1UTwin.cfm
But they share the power supply. May be that's what you didn't like. On 1/21/15 7:31 AM, Alan McKay wrote: > I know that Supermicro has some interesting side-by-sides starting at > 2U, but I'm not aware of anything in 1U. Basically I'd like to have > my redundant FW pairs take up less rack space. I guess another > option would be half-width 1U if anything like that exists, and > install a rack shelf.