Chapter 1 Physical Specification 1-29
1.2.2.3 Free-Access Floor Openings for Underfloor Air-Conditioning
Use underfloor air conditioning to cool the SPARC Enterprise M9000 server (with an
extended cabinet).
To use underfloor air conditioning, air-conditioning openings must be provided on
the free-access floor under the cabinet. FIGURE 1-23 and FIGURE 1-24 show examples of
floor openings. There must be four openings of sizes corresponding to the
recommended value for underfloor air-conditioning. However, if these openings
cannot be prepared, use the largest possible floor openings that can be prepared in
the raised floor under the cabinet or in the area around the cabinet, after taking into
consideration such factors as the air-conditioning capacity required for the cabinet,
the floor strength, and the locations of the leveling feet.
FIGURE 1-23 SPARC Enterprise M9000 Server (Base Cabinet + Expansion Cabinet) Floor Openings
Unit: mm (inch)
Front
Opening for air conditioning from the bottom
(The opening should be in the shaded free-
access area. It cannot be shared with the
opening for cables out.)
Caster
Feet