– To avoid straining the muscles in your back, lift by standing or by pushing up with your leg muscles.
• Make sure that you have an adequate number of properly grounded electrical outlets for the server,
monitor, and other devices.
• Back up all important data before you make changes to drives.
• Have a small flat-blade screwdriver available.
• You do not have to turn off the server to install or replace a hot-swap redundant power supply, hot-swap
hard disk drives, or hot-plug USB devices. However, you must turn off the server before performing
any steps that involve installing, removing, or replacing adapter cables or non-hot-swap devices or
components.
• To view the LEDs on the system board and internal components, leave the server connected to power.
• When you are finished working on the server, reinstall all safety shields, guards, labels, and ground wires.
• When working inside the server, you might find some tasks easier if you lay the server on its side.
Handling static-sensitive devices
Attention:
Do not open the static-protective package that contains the new part until the defective part has been
removed from the server and you are ready to install the new part. Static electricity, although harmless to you,
can seriously damage server components and parts.
When you handle server parts and components, take these precautions to avoid static-electricity damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• The use of a grounding system is recommended. For example, wear an electrostatic discharge (ESD)
wrist strap, if one is available. Make sure that you work in an ESD-safe area.
• Always carefully handle the parts and other components (such as PCI cards, memory modules, system
boards, and microprocessors) by its edges or its frame. Do not touch solder joints, pins, or exposed
circuitry.
• Do not leave the device where others can handle and damage it.
• Before you replace a new part, touch the static-protective package containing the new part to an
unpainted metal part of the server for at least two seconds. This reduces static electricity from the
package and your body.
• Remove the new part from the static-protective package and directly install it in the server without
placing it on any other surface. If it is hard for you to do this in your specific situation, place the
static-protective package of the new part on a smooth, level surface, and then place the new part on
the static-protective package.
• Do not place the part on the server cover or other metal surface.
• Take additional care when handling devices during cold weather. Heating reduces indoor humidity
and increases static electricity.
System reliability guidelines
To help ensure proper cooling and system reliability, make sure that you follow these guidelines:
• Each of the drive bays has a drive or a dummy tray installed; or there is an electromagnetic interface (EMI)
protective panel or EMI shield installed to protect the drive cage.
• If the server has redundant power, each of the power supply bay has a redundant power supply installed,
or one bay has a redundant power supply while the other bay is covered by a shield.
• Leave adequate space around the server to make sure that the server cooling system works well. Leave
approximately 50 mm (2 inches) 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, install the server cover before you turn on
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