IBM BladeCenter

The IBM BladeCenter was IBM's blade server architecture, until was replaced by Flex System, and the x86 division was later sold to Lenovo in 2014.

Introduced in 2002, based on engineering work started in 1999, the IBM BladeCenter was relatively late to the blade server market. It differed from prior offerings in that it offered a range of x86 Intel server processors and input/output (I/O) options. In February 2006, IBM introduced the BladeCenter H with switch capabilities for 10 Gigabit Ethernet and InfiniBand 4X.

A web site called Blade.org was available for the blade computing community through about 2009.

In 2012 the replacement Flex System was introduced.

The original IBM BladeCenter was later marketed as BladeCenter E with 14 blade slots in 7U. Power supplies have been upgraded through the life of the chassis from the original 1200 to 1400, 1800, 2000 and 2320 watt.

The BladeCenter (E) was co-developed by IBM and Intel and included:

BladeCenter T is the telecommunications company version of the original IBM BladeCenter, available with either AC or DC (48 V) power. Has 8 blade slots in 8U, but uses the same switches and blades as the regular BladeCenter E. To keep NEBS Level 3 / ETSI compliant special Network Equipment-Building System (NEBS) compliant blades are available.

Upgraded BladeCenter design with high-speed fabric options. Fits 14 blades in 9U. Backwards compatible with older BladeCenter switches and blades.

BladeCenter HT is the telecommunications company version of the IBM BladeCenter H, available with either AC or DC (48 V) power. Has 12 blade slots in 12U, but uses the same switches and blades as the regular BladeCenter H. But to keep NEBS Level 3 / ETSI compliant special NEBS compliant blades are available.

Targets mid-sized customers by offering storage inside the BladeCenter chassis, so no separate external storage needs to be purchased. It can also use 110 V power in the North American market, so it can be used outside the datacenter. When running at 120V, the total chassis capacity is reduced.

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