smo

Hello folks, Newbie builder here. I am working on the parts list for a server that will house 15 disks. I am considering using three 5x3 Drive cages. I understand the power needs and single rail concepts, however I'm new to purchasing power supplies for an application like this and I'm not up to speed (and can't quite figure out) how to tell how many power plugs come with a particular power supply (or which plugs I can use). For example, one of the PSUs mentioned (http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020) shows the following: 1 x Main connector (20+4Pin) 1 x 4+4 Pin CPU 8 x Peripheral 8 x SATA 2 x Floppy 2 x PCI-E Here are my questions: Will I use the "Peripheral" plugs or the SATA plugs? I haven't seen SATA power ports on the Cages (or did I miss that?). Are the "Floppy" cables available to use as well (do they supply the same power)? In looking at the Drive Cages, it would appear that you can get away with needing only three power plugs for five drives. Is that correct? If I put in three cages, I'd still be one short using this PSU, correct? Is there a way to daisy-chain additional plugs? I wouldn't think so, but I'm asking... How is a large array (ie 15 drives) usually powered? How or where do you get 15 plugs? I feel like I'm missing something obvious, so I apologize if these are dumb Q's or covered elsewhere. Thanks in advance.