HP 9000 rp8420 Server - User Service Guide, Fifth Edition

NOTE: When determining power requirements, you must consider any peripheral equipment
that will be installed during initial installation or as a later update. Refer to the applicable
documentation for such devices to determine the power and air conditioning that is required to
support these devices.
Acoustic Noise Specification
The acoustic noise specification for the HP 9000 rp8420 server is 55.6 db (sound pressure level
at bystander position). It is appropriate for dedicated computer room environments, not office
environments. The LwA is 7.4 Bels. Care should be taken to understand the acoustic noise
specifications relative to operator positions within the computer room or when adding servers
to computer rooms with existing noise sources.
Air Flow
The recommended HP 9000 rp8420 server cabinet air intake temperature is between 68° F and
77° F (20° C and 25° C) at 560 CFM.
illustrates the location of the inlet and outlet airducts on a single cabinet. Air is drawn into the
front of the HP 9000 rp8420 server and forced out the rear.
Figure B-1 Air Flow Diagram
Power Distribution Unit
The server may ship with a power distribution unit (PDU). There are two 60A PDUs available
for the HP 9000 rp8420 server. Each PDU is mounted horizontally between the rear columns of
the server cabinet. The 60A PDUs are delivered with an IEC-309 60A plug.
The 60A NEMA
4
PDU has four 20A circuit breakers and is constructed for North American use.
Each of the four circuit breakers has two IEC
5
-320 C19 outlets providing a total of eight IEC-320
C19 outlets.
The 60A IEC PDU has four 16A circuit breakers and is constructed for International use. Each
of the four circuit breakers has two IEC-320 C19 outlets providing a total of eight IEC-320 C19
outlets.
4. NEMA — National Electrical Manufacturers Association
5. IEC — International Electrotechnical Commission
Power Distribution Unit 181