HP Integrity rx7640, Service Manual

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Table 2-9 Typical Server Configurations for the HP Integrity rx7640 Server
Typical
Cooling Typical
Power Bulk Power
Supplies Core I/O Hard Disk
Drives DVDs PCI Cards
(assumes 10
watts each) Memory Per
Cell Board Cell
Boards
BTU/hr Watts Qty Qty Qty Qty Qty GBytes Qty
7265 2128 2 2 4 2 16 32 2
6685 1958 2 2 2 0 8 16 2
6558 1921 2 2 2 0 8 8 2
4308 1262 2 1 1 0 8 8 1
The air conditioning data is derived using the following equations.
• Watts x (0.860) = kcal/hour
• Watts x (3.414) = Btu/hour
• Btu/hour divided by 12,000 = tons of refrigeration required
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 server is 57.3 db (sound pressure level at bystander
position) It is appropriate for dedicated computer room environments but not office environments.
The LwA is 7.5 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.
Airflow
The recommended server cabinet air intake temperature is between 20° and 25° C (68° and 77°
F) at 960 CFM.
Figure 2-1 illustrates the location of the inlet and outlet airducts on a single cabinet. Air is drawn
into the front of the server and forced out the rear.
40 Server Site Preparation