System Reliability Guidelines; Working Inside The Server With The Power On - IBM 7979B1U User Manual

v Blue on a component indicates touch points, where you can grip the component
v Orange on a component or an orange label on or near a component indicates
v When you are finished working on the server, reinstall all safety shields, guards,
v For a list of supported optional devices for the server, see http://www.ibm.com/

System reliability guidelines

To help ensure proper system 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 and electromagnetic
v If the server has redundant power, each of the power-supply bays has a power
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 baffles installed. Operating the
v Microprocessor socket 2 always contains either a heat-sink filler or a

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-plug, hot-add, and 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
to remove it from or install it in the server, open or close a latch, and so on.
that the component can be hot-swapped, which means that if the server and
operating system support hot-swap capability, you can remove or install the
component while the server is running. (Orange can also indicate touch points on
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.
servers/eserver/serverproven/compat/us/.
compatibility (EMC) shield installed in it.
supply installed in it.
Attention: In a dc power environment, only trained service personnel other
than IBM service technicians are authorized to connect or disconnect power to
the dc power supply and to install and remove a dc power supply. See the
documentation that comes with each dc power supply.
work properly. Leave approximately 50 mm (2.0 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 you turn 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 baffles might cause the microprocessors to overheat.
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.
Chapter 2. Installing optional devices
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