Numeric Display Leds - IBM DS4800 Installation, User And Maintenance Manual

Table 34. RAID controller LEDs (continued)
Legend LED
11 Ethernet Link
Activity
12 Numeric Display
(enclosure ID and
Diagnostic Display)
The L1 and L2 LEDs for each host and drive channel combine to indicate the status
and the operating speed of each host or drive channel.
Table 35. Host and drive channel LED definitions
L1
Off
On
Off
On

Numeric display LEDs

The numeric display consists of two seven-segment LEDs that provide information
about enclosure identification and diagnostics. Figure 76 on page 124 shows the
numeric display and the diagnostic LED.
Color Normal Status
Green LED Off = No link
established
On = Link
established
Blinking = Activity
Green/ yellow Diagnostic LED = flashing: Controller enclosure ID is displayed
seven-
Diagnostic LED = on: Diagnostic code is displayed
segment
display
The Diagnostic LED is located on the Numeric Display. See
"Numeric display LEDs."
L2 Definition
Off When both LEDs for a host or drive channel are off, this
indicates one or more of the following conditions:
v The host or drive channel ports are bad.
v An SPF module is inserted with no fibre channel cable
v No SFP module is inserted in one or both of the host or
Off The host channel is operating at 1 Gbps.
On The host or drive channel is operating at 2 Gbps.
On The host or drive channel is operating at 4 Gbps.
Problem Status
LED is off when a
Ethernet cable is
connected:
attached.
drive ports in the channel.
Chapter 4. Operating the storage subsystem
Procedure
v Check to see whether
there are problems
with the Ethernet
cables or Ethernet
switch.
v Verify that the
controller is not offline.
v Verify that the
controller Ethernet port
has not been disabled.
v Verify that the
controller Ethernet port
is not bad.
123