IBM Type 7977 manual System reliability guidelines, Working inside the server with the power on

vHave a small flat-blade screwdriver available.

vYou do not have to turn off the server to install or replace hot-swap power supplies, hot-swap hard disk drives, hot-swap fans, or hot-plug Universal Serial Bus (USB) devices.

vBlue 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.

vOrange 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.

vWhen you have to access the inside of the server, you might find it easier to lay the server on its side.

vYou can install a maximum of two IDE devices in the server.

vFor a list of supported optional devices for the server, go to http://www.ibm.com/ servers/eserver/serverproven/compat/us/.

System reliability guidelines

To help ensure proper cooling and system reliability, make sure that the following requirements are met:

vEach of the drive bays has a drive or an electromagnetic compatibility (EMC) shield installed in it.

vIf the server has redundant power, each of the power-supply bays has a power supply installed in it.

vThere 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 left-side cover before you turn on the server. Operating the server for extended periods of time (more than 30 minutes) with the left-side cover removed might damage server components.

vYou have followed the cabling instructions that come with optional adapters.

vYou have replaced a failed fan within 48 hours.

vYou have replaced a hot-swap drive within 2 minutes of removal.

vYou do not remove the air ducts or air baffles while the server is running. Operating the server without the air ducts or air baffles might cause the microprocessor to overheat.

vMicroprocessor 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:

vAvoid wearing loose-fitting clothing on your forearms. Button long-sleeved shirts before you work inside the server; do not wear cuff links while you are working inside the server.

vDo not allow your necktie or scarf to hang inside the server.

vRemove jewelry, such as bracelets, necklaces, rings, and loose-fitting wrist watches.

8IBM System x3500 Type 7977: Installation Guide