IBM 88784RU User Manual

Also see for x3950 8872: Installation guide

Contents

v If the server has redundant power, each of the power-supply bays has a powersupply installed in it.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 run the server without the air baffle installed. Operating the serverwithout the air baffle might cause the microprocessor or microprocessors tooverheat.v Microprocessor sockets 2, 3, and 4 each always contain either a microprocessorbaffle or a microprocessor and heat sink.v For redundant and hot-swappable operation, the power supplies are connected to200-240 V ac.Working inside the server with the power onAttention: Static electricity that is released to internal server components whenthe server is powered-on might cause the server to halt, which could result in theloss of data. To avoid this potential problem, always use an electrostatic-dischargewrist strap or other grounding system when working inside the server with thepower on.The server supports hot-plug, hot-add, and hot-swap devices and is designed tooperate safely while it is turned on and the cover is removed. Follow theseguidelines when you work inside a server that is turned on:v Avoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirtsbefore working inside the server; do not wear cuff links while you are workinginside 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 wristwatches.v Remove items from your shirt pocket, such as pens and pencils, that could fallinto 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 devicesAttention: Static electricity can damage the server and other electronic devices.To avoid damage, keep static-sensitive devices in their static-protective packagesuntil you are ready to install them.To reduce the possibility of damage from electrostatic discharge, observe thefollowing precautions:v Limit your movement. Movement can cause static electricity to build up aroundyou.v The use of a grounding system is recommended. For example, wear anelectrostatic-discharge wrist strap, if one is available. Always use anelectrostatic-discharge wrist strap or other grounding system when working insidethe server with the power on.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.22 IBM System x3950 Type 8872 and System x3950 E Type 8874: User’s Guide