Blade servers help reduce the space requirements for servers in the data center. Through the use of a specially designed chassis, blade servers are installed vertically, like books in a bookshelf, instead of horizontally, in a 19" industry-standard rack. By removing the power and cooling components from each individual server and moving them to the rear of the chassis, customers can reduce the amount of space required. Up to ten blade servers can be installed in a chassis that consumes 7U of rack space. Compared to 10U of rack space that ten 1U servers would normally require as individual servers, the PowerEdge 1855 provides up to 43% better density* with up to 60 total servers in a 42U rack. Compared to the maximum of 42 1U servers, this provides quite significant space savings for space-constrained data centers.