System Reliability Guidelines; Working Inside The Server With The Power On - IBM System x3800 Manual

v When you are finished working on the server, reinstall all safety shields, guards,
v For a list of supported options for the server, see http://www.ibm.com/servers/

System reliability guidelines

To help ensure proper cooling and system reliability, make sure that the following
requirements are met:
v Each of the drive bays has a drive or a filler panel installed in it.
v If the server has redundant power, at least three power-supply bays have a
v There is adequate space around the server to allow the server cooling system to
v You have followed the cabling instructions that come with optional adapters.
v You have replaced a failed fan within 48 hours.
v You have replaced a hot-swap drive within 2 minutes of removal.
v You do not operate the server without the air baffle installed. Operating the
v The air baffle lies flat and within the grooves on top of the microprocessor heat
v Microprocessor sockets 2, 3, and 4 each always contain either a microprocessor

Working inside the server with the power on

Attention:
the server is powered-on might cause the server to halt, which could result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when working inside the server with the
power on.
The server supports hot-swap devices and is designed to operate safely while it is
turned on and the cover is removed. Follow these guidelines when you work inside
a server that is turned on:
v Avoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirts
v Do not allow your necktie or scarf to hang inside the server.
v Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist
v Remove items from your shirt pocket, such as pens and pencils, that could fall
v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws,
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IBM System x3800 Type 8865: Problem Determination and Service Guide
hot-swap components.) See the instructions for removing or installing a specific
hot-swap component for any additional procedures that you might have to
perform before you remove or install the component.
labels, and ground wires.
eserver/serverproven/compat/us/.
power supply installed.
work properly. Leave approximately 50 mm (2 in.) of open space around the front
and rear of the server. Do not place objects in front of the fans. For proper
cooling and airflow, replace the server cover before turning on the server.
Operating the server for extended periods of time (more than 30 minutes) with
the server cover removed might damage server components.
server without the air baffle might cause the microprocessor or microprocessors
to overheat.
sinks and microprocessor baffles.
baffle or a microprocessor and heat sink.
Static electricity that is released to internal server components when
before working inside the server; do not wear cuff links while you are working
inside the server.
watches.
into the server as you lean over it.
into the server.