•
In single rack installations, stabilizers should be attached to the rack. In multiple rack in-
stallations, the racks should be coupled together.
•
Always make sure the rack is stable before extending a system or other component from
the rack.
•
You should extend only one system or component at a time - extending two or more si-
multaneously may cause the rack to become unstable.
Rack Precautions
•
Ensure that the leveling jacks on the bottom of the rack are extended to the floor so that
the full weight of the rack rests on them.
•
In single rack installations, stabilizers should be attached to the rack. In multiple rack in-
stallations, the racks should be coupled together.
•
Always make sure the rack is stable before extending a server or other component from
the rack.
•
You should extend only one server or component at a time - extending two or more simul-
taneously may cause the rack to become unstable.
Server Precautions
•
Review the electrical and general safety precautions in
•
Determine the placement of each component in the rack before you install the rails.
•
Install the heaviest server components at the bottom of the rack first and then work your
way up.
•
Use a regulating uninterruptible power supply (UPS) to protect the server from power
surges and voltage spikes and to keep your system operating in case of a power failure.
•
Allow any drives and power supply modules to cool before touching them.
•
When not servicing, always keep the front door of the rack and all covers/panels on the
servers closed to maintain proper cooling.
Chapter 2: System Installation
Appendix
22
A.