Rear view of the chassis

Fan modules, I/O modules, power supplies, fan logic modules, and the Lenovo Flex System Chassis Management Modules are in the rear of the Flex System Enterprise Chassis.

Note

Each bay in the chassis must contain either a device or a filler.

The following illustration shows the rear view of the chassis.

• Flex System Chassis Management Module
  The Lenovo Flex System Chassis Management Module (Chassis Management Module or CMM) is a hot-swap module that configures and manages all installed chassis components. The chassis comes with one Chassis Management Module in the CMM bays.
• I/O modules
  You can install up to four I/O modules in the Flex System Enterprise Chassis, including Ethernet switch modules, Fibre Channel switch modules, Infiniband, and pass-thru modules (optical and copper).
• Power supplies
  The Flex System Enterprise Chassis supports up to six autoranging power supplies.
• Fan modules
  The Flex System Enterprise Chassis supports up to ten fan modules (two 40 mm fan modules and eight 80 mm fan modules). It comes with a minimum of six hot-swap fan modules installed (four 80 mm fan modules and two 40 mm fan modules).
• Fan logic modules
  The Flex System Enterprise Chassis comes with two installed hot-swap fan logic modules.