Technical data

3-8 Brocade SilkWorm 4100 Hardware Reference Manual

Publication Number: 53-0000563-02

Maintaining the SilkWorm 4100

Fan Assemblies

The three fan assemblies are hot-swappable if replaced one at a time. They are identical and fit into

any fan assembly slot.

Each fan assembly contains two fans, identified by Fabric OS as follows (viewing the switch from

the nonport side):

• Fan assembly #1 is on the right.

• Fan assembly #2 is in the center.

• Fan assembly #3 is on the left.

Any of the following methods can be used to determine whether a fan assembly requires replacing:

• Check the fan status LED on the face of the fan assembly (see “LEDs on the Nonport Side

of the Switch” on page 3-4)

• Type the fanShow command at the command prompt.

• In Advanced Web Tools, click the Fan Status icon.

switch:admin> fanshow

Fan 1 sensor 1 is OK, speed is 5625 RPM

Fan 1 sensor 2 is OK, speed is 5578 RPM

Fan 2 sensor 1 is OK, speed is 5720 RPM

Fan 2 sensor 2 is OK, speed is 6026 RPM

Fan 3 sensor 1 is OK, speed is 5921 RPM

Fan 3 sensor 2 is OK, speed is 5818 RPM