2.1 IBM BladeCenter The BladeCenter provides the greatest density and common fabric support and is the lowest entry cost option. The other two members of the family, BladeCenter T and BladeCenter H, provide additional flexibility for difficult environmental needs and greater performance levels. All three chassis share a common set of blades and switches. For our SAN discussion, we will focus only the BladeCenter and BladeCenter H chassis. The IBM BladeCenter include the following features: Rack-optimized, 7 U modular design enclosure for up to 14 hot-swap HS20, HS21, JS20, JS21, or LS20 blades and up to seven HS40 blades High-availability mid-plane that supports hot-swap of individual blades Two 2,000-watt, hot-swap power modules and support for two optional 2,000-watt power modules; redundancy and power for robust configurations Two hot-swap blowers A new Advanced Management Module (AMM) gives you control over the solutions at the chassis level, simplifying installation and management of everything in your installation Support for up to four network or storage switches or pass-through modules