HP StorageWorks 2012sa Modular Smart Array user (488320-004, March 2013)

Chapter 1 System Components 17
Figure 1-3 shows the LEDs at the back of the controller.
Figure 1-3 Controller LEDs (Back View)
Table 1-5 describes the LEDs on the back of the controller. For information about
troubleshooting the system using LEDs, see “Troubleshooting” on page 53.
Table 1-5 Controller LEDs (Back)
Location LED Color State Description
Power-and-
cooling module
AC Power Good Green Off AC power is off or input voltage is below
the minimum threshold.
On AC power is on and input voltage is normal.
Power-and
cooling module
DC Voltage/
Fan Fault/
Service Required
Amber Off DC output voltage is normal.
On DC output voltage is out of range or a fan is
operating below the minimum required
RPM.
Controller
module
Host link status Green Off The port is empty or the link is down.
On The port link is up and connected.
Controller
module
Host link activity Green Off The host port is not connected or the link is
down.
On The host link is up and active.
AC Power Good
Service Required
DC Voltage/Fan Fault/
Host link status
Host link activity
Unit Locator
OK to Remove Fault/Service Required
OK
Cache status
Host activity
Expansion port status
Ethernet activity
Ethernet link status