IBM TotalStorage DS4800, User, Installation And Maintenance Manual

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Table 19. RAID controller LEDs (continued)
Legend LED Color Normal Status Problem Status Procedure
11 Ethernet Link
Activity
Green LED Off = No link
established
On = Link
established
Blinking = Activity
LED is off when a
Ethernet cable is
connected:
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.
12 Numeric Display
(enclosure ID and
Diagnostic Display)
Green/ yellow
seven-
segment
display
Diagnostic LED = flashing: Controller enclosure ID is displayed
Diagnostic LED = on: Diagnostic code is displayed
The Diagnostic LED is located on the Numeric Display. See
“Numeric display LEDs.”
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 20. Host and drive channel LED definitions
L1 L2 Definition
Off 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
attached.
v No SFP module is inserted in one or both of the host or
drive ports in the channel.
On Off The host channel is operating at 1 Gbps.
Off On The host or drive channel is operating at 2 Gbps.
On On The host or drive channel is operating at 4 Gbps.
Numeric display LEDs
The numeric display consists of two seven-segment LEDs that provide information
about enclosure identification and diagnostics. Figure 73 on page 117 shows the
numeric display and the diagnostic LED.
116
IBM System Storage DS4800 Storage Subsystem: Installation, User’s, and Maintenance Guide