Form factor? A case like these: http://www.newegg.com/Product/Product.aspx?Item=N82E16811219048 http://www.newegg.com/Product/Product.aspx?Item=N82E16811219...

Form factor? A case like these: http://www.newegg.com/Product/Product.aspx?Item=N82E16811219048 http://www.newegg.com/Product/Product.aspx?Item=N82E16811219... http://www.newegg.com/Product/Product.aspx?Item=N82E16811219054 http://www.newegg.com/Product/Product.aspx?Item=N82E16811219... http://www.newegg.com/Product/Product.aspx?Item=N82E16811163255 http://www.newegg.com/Product/Product.aspx?Item=N82E16811163... http://www.u-nas.com/product/nsc800.html http://www.u-nas.com/product/nsc800.html Low power usage? Well many Synology units use Intel Atom CPUs. Anyone can buy a small board that has these same Intel Atom CPUs and stick them in those cases. Or make your server with NUC parts which use laptop CPUs. Like <15W parts. Even higher end CPUs these days idle at really low wattage. So your NAS when idling wont use much power.