Hardware Reference Manual

58 Brocade VDX 8770-8 Hardware Reference Manual

53-1002564-04

Determining the status of a fan

FIGURE 18 Fan module

For absent or faulty indications, contact the Brocade VDX 8770-8 supplier to order replacement

parts. You may also want to do this if the indication is below minimum or above maximum.

Table 16 on page 59 describes the LED patterns for the fan.

1Power LED 2Fault LED

TABLE 15 Output for show environment fan command

Output Explanation

OK Fan is functioning correctly at the

displayed speed (RPM).

absent Fan is not present. Could also mean that

the fan is improperly seated.

below minimum Fan is present but rotating too slowly or

stopped.

above maximum Fan is rotating too quickly.

unknown Unknown fan unit installed.

faulty Fan has exceeded hardware tolerance

and has stopped. In this case, the last

known fan speed is displayed. Could also

mean that the fan is improperly seated.