System Reliability Guidelines; Working Inside The Server With The Power On - Lenovo System x3100 M4 Installation And Service Manual

• Blue on a component indicates touch points, where you can grip the component to remove it from or
install it in the server, open or close a latch, and so on.
• Orange on a component or an orange label on or near a component indicates 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.
• When you are finished working on the server, reinstall all safety shields, guards, labels, and ground wires.

System reliability guidelines

The system reliability guidelines to ensure proper system cooling.
To help ensure proper system cooling and system reliability, make sure that the following requirements are
met:
• Each of the drive bays has a drive or a filler panel and electromagnetic compatibility (EMC) shield installed
in it.
• If the server has redundant power, each of the power-supply bays has a power supply installed in it.
• There is adequate space around the server to allow the server cooling system to 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.
• You have followed the cabling instructions that come with optional adapters.
• You have replaced a failed fan as soon as possible.
• You have replaced a hot-swap drive within 2 minutes of removal.
• You do not operate the server without the air baffle installed. Operating the server without the air baffle
might cause the microprocessor to overheat.

Working inside the server with the power on

Guidelines to work inside the server with the power on.
Attention: Static electricity that is released to internal server components when 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 server cover is removed. Follow these guidelines when you work inside a server that is
turned on:
Note: In order to work inside the server with the power on, you have to disable the power cut-off switch
before removing the server cover.
• Avoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirts before working inside
the server; do not wear cuff links while you are working inside the server.
• Do not allow your necktie or scarf to hang inside the server.
• Remove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist watches.
• Remove items from your shirt pocket, such as pens and pencils, that could fall into the server as you lean
over it.
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Chapter 2 Installing optional devices
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