Despite having a similar shape to rack servers, blade servers are thinner and more expensive. Multiple thin, modular EC boards, also known as server blades, are housed in a server chassis known as a blade server. In reality, each blade is a server that is frequently devoted to a single application. The server blades, which are actually servers on a card and have processors, memory, built-in network controllers, and other input/output (IO) ports, are known as servers on a blade.
Your needs will ultimately determine the sort of server you select. You can choose racks if space is your key issue. Towers are an option if cooling is a priority but space is not. Additionally, if cost is not an issue and you desire cutting-edge server gear that is compact and works efficiently go for blade servers.