IBM System x3950 E Installation Manual

Also see for 8878: Problem determination and service guide

v Orange on a component or an orange label on or near a component indicatesthat the component can be hot-swapped, which means that if the server andoperating system support hot-swap capability, you can remove or install thecomponent while the server is running. (Orange can also indicate touch points onhot-swap components.) See the instructions for removing or installing a specifichot-swap component for any additional procedures that you might have toperform before you remove or install the component.v When you are finished working on the server, reinstall all safety shields, guards,labels, and ground wires.v For a list of supported optional devices for the server, see http://www.ibm.com/servers/eserver/serverproven/compat/us/.System reliability guidelinesTo 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 powersupply installed in it.v There is adequate space around the server to allow the server cooling system towork properly. Leave approximately 50 mm (2 in.) of open space around the frontand rear of the server. Do not place objects in front of the fans. For propercooling and airflow, replace the server cover before turning on the server.Operating the server for extended periods of time (more than 30 minutes) withthe 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 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-swap devices and is designed to operate safely while it isturned on and the cover is removed. Follow these guidelines when you work insidea 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.8 IBM System x3950 Type 8878 and System x3950 E Type 8879: Installation Guide