System Reliability Guidelines - IBM x3250 M3 Problem Determination And Service Manual

v Before you install optional devices, make sure that the server is working
v Observe good housekeeping in the area where you are working. Place removed
v If you must start the server while the cover is removed, make sure that no one is
v Do not attempt to lift an object that you think is too heavy for you. If you have to
v Make sure that you have an adequate number of properly grounded electrical
v Back up all important data before you make changes to disk drives.
v Have a small flat-blade screwdriver, a small Phillips screwdriver, and a T8 torx
v You do not have to turn off the server to install or replace hot-swap drives or
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 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 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 fan within 30 seconds of removal.
v You have kept the preinstalled air baffle in place unless you are directed to
128
IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
correctly. Start the server, and make sure that the operating system starts, if an
operating system is installed, or that a 19990305 error code is displayed,
indicating that an operating system was not found but the server is otherwise
working correctly. If the server is not working correctly, see Chapter 1, "Start
here," on page 1 and Chapter 3, "Diagnostics," on page 21 for diagnostic
information.
covers and other parts in a safe place.
near the server and that no other objects have been left inside the server.
lift a heavy object, observe the following precautions:
– Make sure that you stand safely without slipping.
– Distribute the weight of the object equally between your feet.
– Use a slow lifting force. Never move suddenly or twist when you lift a heavy
object.
– To avoid straining the muscles in your back, lift by standing or by pushing up
with your leg muscles
outlets for the server, monitor, and other devices.
screwdriver available.
hot-plug Universal Serial Bus (USB) devices. However, you must turn off the
server before you perform any steps that involve removing or installing adapter
cables, and you must disconnect the power source before you perform any steps
that involve removing or installing riser cards.
labels, and ground wires.
servers/eserver/serverproven/compat/us/.
compatibility (EMC) shield installed in it.
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 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.
remove it in this publication or by IBM service.