A blade server is a slimmed-down computer server designed to slide into a larger chassis that provides common networking, power and cooling functions to all the computers within the case.
2Blade Servers – Advantage: Saving Space
This example from Dell shows how 60 blade servers can fit in the same amount of data center rack space as 42 conventional ones matching the 1U standard for rack-mounted servers.
3Blade Servers – What a Blade Includes
The basic components that allow a computer to store information and process instructions are crammed onto the compact blade card, but power supplies, fans and network cards are typically not included because the blade chassis takes responsibility for p
4Blade Servers – Blade Server Chassis
Blade servers slide into slots in a blade server chassis, such as IBMs BladeCenter.
5Blade Servers – Connection
Connectors at the back of the blade server unit allow it to plug into the chassis.
6Blade Servers – Common Services
Fans and power and networking connectors in the back of the chassis provide common services to all the blade servers. Often, the blade server chassis includes an integrated network switch.
7Blade Servers – Clutter Reduction
Blades help reduce the tangle of power and network cables running into server racks, often by a factor of more than 10-to-1.
8Blade Servers – Power and Cooling Challenges
There are also negative consequences to the high densities achieved with the use of blade servers. While the vendors will tell you that per-server power and cooling costs are less than for comparable stand-alone servers, Gartner points out that the pow