Chapter 3. Operating The San16B-2; Powering The San16B-2 On And Off; Interpreting Led Activity; Led Location - IBM SAN16B-2 - TotalStorage Express Model Switch User And Service Manual

Chapter 3. Operating the SAN16B-2

This chapter provides the following information:
v "Powering the SAN16B-2 on and off"
v "Interpreting LED activity"
v "POST and boot specifications" on page 25
v "Interpreting POST results" on page 26

Powering the SAN16B-2 on and off

See Chapter 2, "Installing and configuring the SAN16B-2," on page 7 for initial setup
instructions before powering the switch on for the first time. Once the switch has
been properly configured, follow these instructions to power the switch on and off at
other times.
To power on the switch, connect the power cable to the ac receptacle on the switch
and to a power source. The switch runs POST by default each time it is powered
on, reset, or rebooted, and requires a minimum of 3 minutes to run. To end the flow
of power to the switch, remove the power cord from the power source.

Interpreting LED activity

System activity and status can be determined through the activity of the LEDs on
the switch. All the switch's LEDs are located on the port side of the switch.
There are three possible LED states: no light, a steady light, and a flashing light.
The steady lights and flashing lights can be green or amber.
Sometimes the LEDs flash either of these colors during boot, POST, or other
diagnostic tests. This is normal and does not indicate a problem unless all boot
processes and diagnostic tests are complete, and the LEDs continue to indicate a
problem status.

LED location

The LEDs are located on the port side of the switch (see Figure 9 on page 22).
They include:
v Power Status 8 (green only) to indicate a valid power supply to the system
v System Status 9 (green/amber) to indicate the current system status
v Ethernet Link 11 to indicate an active Ethernet connection
v Ethernet Speed 10 to indicate the Ethernet speed
v Port Status 7 (green/amber), located in pairs below each pair of Fibre Channel
v Port Speed 6 (green/amber), located in pairs below each pair of Fibre Channel
Note: The pairs of port LEDs for all 16 ports are arrayed below the lower row of
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ports (left LED of each pair)
ports (right LED of each pair)
ports. The pairs of port LEDs are located in the array in the same relative
positions as the ports. The port number of the associated Fibre Channel port
appears between the Port Status and Port Speed LEDs.
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