User Guide

31
System rack installation
Important! Observe the electrostatic discharge (ESD)
precautions indicated on page 41 when perfoming the following
procedures.
Do not attempt the procedures described in the following sections
unless you are a qualified technician.
Vertical mounting hole pattern
The four vertical rails of the system rack contain mounting holes
arranged in a manner shown in the figure below:
The system occupies 1U in the rack. Count the U positions and hole
numbers from the bottom up.
Note: The unit of measurement used in this document is "U"
(1U = 1.75 inches or 44.45 mm). The total sum of the heights of all
components in the rack measured in "U" cannot exceed the
height of the rack. For more information, refer to the
documentation that came with your system rack.
The distance from the center of two holes with closer spacing to the
center of the next pair is equivalent to 1U.
aa r500.book Page 31 Monday, October 22, 2001 9:32 AM