HP StorageWorks MSA 2.8 SAN Switch - Manual (Page 187)

Diagnostics and Status
187 Fabric OS Procedures Version 3.1.x/4.1.x User Guide
Hardware Diagnostics
For detailed hardware information, refer to the switch installation guide supplied
with your specific switch (the installation guide is also available on the v3.1.x or
v4.1.x Software CD.
Monitoring the Fan Status
To display the fan status of a switch:
1. Log into the switch as the admin user.
2. Enter the fanshow command at the command line. The possible values for
fan status are:
OK - Fan is functioning correctly.
absent - Fan is not present.
below minimum - Fan is present but rotating too slowly or stopped.
The following example is the command output from a Core Switch 2/64.
Example
The following example is the command output from a SAN Switch 2/32.
Example:
switch:admin> fanshow
Fan #1 is OK, speed is 2616 RPM
Fan #2 is OK, speed is 2596 RPM
Fan #3 is OK, speed is 2596 RPM
switch:admin>
switch:admin> fanshow
Fan #1 is OK, speed is 7500 RPM
Fan #2 is OK, speed is 7560 RPM
Fan #3 is OK, speed is 7560 RPM
Fan #4 is OK, speed is 7590 RPM
Fan #5 is OK, speed is 7440 RPM
switch:admin>