{wiki}

\Image[https://upload.wikimedia.org/wikipedia/commons/thumb/e/eb/HP_BladeSystem_c7000_Enclosure.jpg/1024px-HP_BladeSystem_c7000_Enclosure.jpg]
{description=Good image from <Wikimedia Commons>. In this one we can see how the blades are put vertically, and you get several of them per horizontal rack space, instead of a tipical single <rack server> going all the way horizontally.}

\Video[https://www.youtube.com/watch?v=RsZjjAqlpJ0]
{title=HP Blade Server by Brian Kirsch (2013)}
{description=
Featuring an HP DL380 blade server, presumably an older model of this series: https://buy.hpe.com/uk/en/servers/proliant-dl-servers/proliant-dl300-servers/proliant-dl380-server/hpe-proliant-dl380-gen10-server/p/1010026818[].

In the video we can see that it contains <RAM>, <disk storage>, we are told about two <CPUs>, and networking interfaces, so it is a complete <computer> on its own. He also explains that unlike typical <rack servers>, each blade unit does not have its own coolers and power supply related hardware, which goes instead on the chassis.
}


Blade server