User`s guide

Chapter 3 Troubleshooting Your Library
Interpreting LEDs
Scalar i6000 User’s Guide 94
Table 13 on page 94 describes how to interpret the link LED activity that
you might see. There are two different models of I/O blade: 6404 and
7404. LED be
havior varies based on which model is installed in the
library.
Table 13 I/O Blade Link LED
States
Blade Model Possible Green LED States and Explanations
6404
2 gigabit/sec
• Solid on — the I/O blade has established a proper
link and is ready to use. The
drive detects light through the fiber optic cable.
• Blinks slowly — the link is up and currently transpor
ting commands.
• Blinks rapidly — when the I/O blade is beginning to reboot or power up, all I/O
blade link LED
s, along with the I/O blade’s green status LED, blink rapidly to
indicate that the blade is starting the Power On Self Test (POST).
• Blinks with other link LEDs in a racetrack
pattern — when all of the I/O blade
link LEDs blink consecutively in a clockwise order, the blade is booting up. This
pattern stops when the blade is powered and ready. If the pattern doesn’t stop,
the blade is unable to completely boot up. In this situation, follow the repair page
instructions.
• Solid off — the I/O blade does not detect light through the fiber optic cable.
7404
4 gigabit/sec
• Solid on — the I/O blade has established a l
ink but is not currently transporting
data.
• Blinks — the link is active and is currently transporting data.
• Solid off — the I/O blade has not established a link OR the
link is active and is
currently transporting a large amount of data.
For the 7404 I/O blade, fibre port LEDs are off
while the blade is booting up.
Note