IBM DS4800 User, Installation And Maintenance Manual page 136

Table 19. RAID controller LEDs (continued)
Legend LED
3 Drive Port Bypass
(one LED per port)
Note: The drive
channel consists of
two FC ports. This
LED indicates the
drive port bypass
status of one of the
two FC ports that
made up a drive
channel. The LED
marked 6 shows
the status of the
other port.
4 Drive Channel
Speed – L1
5 Drive Channel
Speed – L2
114
IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
Color Normal Status
Amber LED Off
Green LED See Table 20 on page 116.
Green LED
Problem Status Procedure
On = Bypass
problem
v An SFP module
is inserted in the
port and the
connected fibre
channel is either
absent or not
properly
connected
v The storage
expansion
enclosure
connected to this
port is not
powered on
v There is a
problem with the
fibre channel
connection
between this port
and the fibre
channel port of
the connected
ESM in the
storage
expansion
enclosure.