Installing components

After you install the Flex System Carrier-Grade chassis in a rack, install all of the components in the chassis.

Before you install components in the Flex System Carrier-Grade chassis:
Important: When you install compute nodes, power supplies, and 80 mm fan modules in the Flex System Carrier-Grade chassis, install them starting from the bottom up.

Compute nodes

The following illustration shows the locations of node bays in the Flex System Carrier-Grade chassis.


Illustration showing the number and location of each compute node bay
Note:
  • A 1-bay compute node occupies one node bay in the chassis.
  • A 2-bay compute node occupies two adjacent node bays (horizontally) in the chassis and requires the chassis shelf to be removed prior to installation.

Power supplies

The chassis power load is dependent on the number and type of compute nodes, I/O modules, and management modules that are installed in the chassis. The number and type of power supplies that you install determines how much power is available to power all of these devices. The amount of power available must be sufficient for the expected chassis load.

You can use the Power Configurator to determine the power load for a specific chassis configuration. See the Power Configurator website for more information.

Important:
  • Up to six power supplies can be installed.
  • Install power supplies from the bottom up starting with power bays 1 and 4, then power bays 2 and 5, then power bays 3 and 6.
  • Do not mix different types of power supplies in the Flex System Carrier-Grade chassis. Each chassis must contain either all dc-powered supplies or all ac-powered supplies.

Install power supplies according to the number of populated node bays as shown in Table 1. See also Power supplies for more information.

Table 1. Required power supplies relative to the number of populated node bays
Number of populated node bays Power supplies required
1 - 4 2
5 - 6 3
7 - 8 4
9 - 11 5
12 - 14 6

80 mm fan modules

The number of 80 mm fans that you install depends on the number of populated node bays. Up to eight 80 mm fan modules can be installed.

Install 80 mm fan modules according to the number of populated node bays as shown in Table 2. See also Fan modules for more information.

Table 2. Required 80 mm fan modules relative to the number of populated node bays
Fan zone 1 (behind node bays 1, 3, 5, 7, 9, 11, and 13) Fan zone 2 (behind node bays 2, 4, 6, 8, 10, 12, and 14)
Number of populated node bays 80 mm fans required Number of populated node bays 80 mm fans required
1 - 2 2 1 - 2 2
3 - 4 3 3 - 4 3
5 - 7 4 5 - 7 4
Parent topic: Setting up your Flex System Carrier-Grade chassis