Enclosure Rear Panel; Power Supply Unit; Multiple Power Supply Units; Cooling Fans - LaCie 12big Rack Storage Server User Manual

LaCie 12big Rack Storage Server
User Manual
be shut down using the procedure in
the Enclosure.
– System reset: Reboots the hardware and firmware. Use the
tip of a ballpoint pen to press the recessed button.
– ID LED: Toggles the blue enclosure identification LED;
mutes the audible alarm.
✦ USB port. This is a Micro USB Type B port connected to the
ATX motherboard. This can be treated as a general purpose
USB port.
Refer to section 4.4.1. Ops Panel LEDs and Switches
scription of the LED and switch functions.
Fig. 11 - Enclosure Front Operator's Panel

2.7. Enclosure Rear Panel

The enclosure assembly includes an integral rear panel, incorporat-
ing an enclosure ID LED (blue), shown in
vated by the button on the Ops Panel or by system software, and can
be used to identify the server from among other units.
IMPORTANT INFO: The Rear Panel is an integral part of the en-
closure chassis assembly and is not field replaceable.

2.8. Power Supply Unit

AC/DC power is provided by two commercial dual-redundant Pow-
er Supply Units.
A Power Supply Mounting Cage is fitted in the rear of the enclosure.
The cage houses two individually hot-pluggable 850W AC Power
Supply Units (PSUs), each with its own IEC inlet connector and fail-
ure indicator.
4.2. Powering Off
for a full de-
Fig. 10. This LED is acti-
Fig. 12 - Power Supply Unit
PSU voltage operating ranges are nominally 100V to 240V AC,
selected automatically. A typical PSU is shown in
2.8.1.

Multiple Power Supply Units

The 12big Rack Storage Server includes two PSUs fitted in the Power
Supply Mounting Cage, providing dual power sources for the system
so that if one PSU fails the other maintains the power supply and
enclosure operation is not affected while the faulty unit is replaced.
PSU replacement should only take a few minutes to perform but
must be completed within 10 minutes of removing the failed PSU.
IMPORTANT INFO: Operation of the enclosure with ANY mod-
ules missing will disrupt the airflow and the system will
not receive sufficient cooling. It is ESSENTIAL that all apertures are
filled before operating the unit.

2.9. Cooling Fans

The cooling fans are high speed single rotor axial fans. Ten fans are
housed in a cooling cage, located centrally within the enclosure, be-
tween the drive bays and the motherboard, as shown in
allows maximum airflow through the system and minimizes noise.
System Overview
page 13
Fig. 12.
Fig. 07. This