IBM 8872 Service Guide - Page 116
System, reliability, guidelines, Working, inside, server, power, Handling, static-sensitive, devices
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v When you are finished working on the server, reinstall all safety shields, guards, labels, and ground wires. v For a list of supported options for the server, see http://www.ibm.com/pc/compat/. 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 installed in it. v If the server has redundant power, each of the power-supply bays has a power supply 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 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 run the server without the air baffle installed. Operating the server without the air baffle might cause the microprocessor or microprocessors to overheat. v Microprocessor sockets 2, 3, and 4 each always contain either a microprocessor baffle or a microprocessor and heat sink. v For redundant and hot-swappable operation, the power supplies are connected to 200-240 V ac. Working 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 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-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. 100 IBM xSeries 460 Type 8872 and xSeries MXE 460 Type 8874: Problem Determination and Service Guide
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