System Reliability Guidelines; Working Inside The Server With The Power On - IBM 7378 Problem Determination And Service Manual

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 You can install a maximum of two IDE devices in the server.
v For a list of supported optional devices for the server, see http://www.ibm.com/

System reliability guidelines

To help ensure proper cooling and system reliability, make sure that the following
requirements are next:
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 as soon as possible.
v You have replaced a hot-swap drive within 2 minutes of removal.
v You do not remove the air baffles or air ducts while the server is running.
v Microprocessor socket 2 always contains either a microprocessor baffle or a

Working inside the server with the power on

Attention:
the server is powered-on might cause the server to halt, which might result in the
loss of data. To avoid this potential problem, always use an electrostatic-discharge
wrist strap or other grounding system when you work 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
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
150
IBM System x3400 M3 Types 7378 and 7379: Problem Determination and Service Guide
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.
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.
Operating the server without the air baffle or air ducts might cause the
microprocessor to overheat.
microprocessor and heat sink.
Static electricity that is released to internal server components when
before you work inside the server; do not wear cuff links while you are you work
inside the server.
watches.