IBM 8840 Installation Guide - Page 22
System, reliability, guidelines, Working, inside, server, power, Handling, static-sensitive, devices
UPC - 000435863799
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System reliability guidelines To help ensure proper cooling and system reliability, make sure that: v Each of the drive bays has a drive or a filler panel and electromagnetic compatibility (EMC) shield installed in it. v Each of the power-supply bays has a power supply or power-supply blank installed in it. v 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 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. 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 remove the air baffle while the server is running. Operating the server without the air baffle might cause the microprocessor to overheat. v Microprocessor socket 2 always contains either a microprocessor baffle or a microprocessor and heat sink. 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 before working inside the server; do not wear cuff links while you are working inside the server. 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 watches. v Remove items from your shirt pocket, such as pens and pencils, that could fall into the server as you lean over it. v Avoid dropping any metallic objects, such as paper clips, hairpins, and screws, into the server. Handling static-sensitive devices Attention: Static electricity can damage the server and other electronic devices. To avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to install them. To reduce the possibility of damage from electrostatic discharge, observe the following precautions: v Limit your movement. Movement can cause static electricity to build up around you. v Wear an electrostatic-discharge wrist strap, if one is available. v Handle the device carefully, holding it by its edges or its frame. v Do not touch solder joints, pins, or exposed circuitry. v Do not leave the device where others can handle and damage it. 8 IBM xSeries 346 Type 8840: Installation Guide