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37
Guidelines in rack installation
The Fortress 1120 server 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 the system rack.
The distance from the center of two holes with closer spacing to the
center of the next pair is equivalent to 1U.
When installing components, you must start your measurement from
the center of the two holes with closer spacing. Otherwise, the screw
holes on the component may not match those on the rack.
Rack installation precautions
Observe the following precautions when you install the server in the
rack:
• When connecting and disconnecting cables, observe the relevant
notes in the documentation of the corresponding rack.
• If necessary, the cables are routed directly on the rack support
uprights.
• Ensure that the anti-tilt bracket is correctly mounted when you set
up the rack.
• For safety reasons, only one unit should be withdrawn from the
rack at any one time. If several units are withdrawn at the same
time from the rack there is a danger that the rack will tilt forward.
• The power connection for the rack must be installed by an
authorized technician (electrician).
• Observe the ESD precautions indicated on page 18 when installing
the server in a rack model fashion.
Fortress 1120 ug - EN .book Page 37 Monday, February 17, 2003 3:41 PM