LaCie 12big Rack Network
Troubleshooting & Problem Solving
User Manual
page 34
4.6. Drive Carrier Module Faults
Each Drive Carrier module incorporates two LEDs, Upper (Green)
and Lower (Amber), shown in
Fig. 10
.
✦
In normal operation the Green LED will be ON and will flicker
as the drive operates
✦
In normal operation the Amber LED state will be:
– – OFF if there is no drive present,
– – OFF as the drive operates, and
– – ON if there is a drive fault present.
IMPORTANT INFO:
Dummy Drive Carrier modules must be fitted
to all unused drive bays to maintain a balanced air flow.
4.7. Dealing with Hardware Faults
Ensure that you have obtained a replacement module of the same
type before removing any faulty module.
CAUTION:
If the LaCie 12big Rack Network subsystem is powered
up and you remove any module, replace it immediately. If the sub-
system is used with modules or module blanks missing for more than
a few minutes, the enclosure can overheat, causing power failure
and data loss. Such use will invalidate the warranty.
✦
Replace a faulty drive with a drive of the same type and equal
or greater capacity.
✦
All drive bays must be fitted with a Drive Carrier module in
order to maintain a balanced air flow.
✦
All the supplied plug-in power supply units, electronics mod-
ules and blank modules must be in place for the air to flow
correctly around the cabinet.
CAUTION:
Observe all conventional ESD precautions when han-
dling LaCie 12big Rack Network modules and components. Avoid
contact with Backplane components and module connectors, etc.
IMPORTANT INFO:
The top cover of the enclosure covers a ser-
vice area which should be accessed by service personnel only. When
the cover is replaced it MUST be secured by turning the lock mecha-
nism to the “locked” position.
4.8. Continuous Operation During
Replacement
Depending on how the enclosure system is set up, if a disk unit
fails, it can normally be replaced without interrupting the use of the
system.
If an enclosure contains two Power Supply Units, either of them can
maintain power to the subsystem while the other is replaced.