Cooling Requirements
The Eserver pSeries 690 requires air for cooling. As shown in ″Proposed Floor Layout for Multiple
Systems″ on page 193, rows of Eserver pSeries 690 systems must face front-to-front. The use of a
raised floor is recommended to provide air through perforated floor panels placed in rows between the
fronts of systems (the cold aisles shown in the figure on page 193).
Note: Do not place perforated tiles in the hot aisles. Heated exhaust air must exit the computer room
through the ceiling air-return system.
The following table provides system cooling requirements based on system configuration. The letter
designations in the table correspond to the letter designations in the graph shown in “Cooling
Requirements Graph” on page 198.
Number of I/O Drawers
(7040-61D)
1.1 GHz 8-way Modules (Cooling Chart Reference)
8-way 16-way 24-way 32-way
1 A B B C
2 B B C C
3 N/A C C D
4 N/A C D E
5 N/A N/A D E
6 N/A N/A D E
7 N/A N/A N/A E
8 N/A N/A N/A F
Number of I/O Drawers (7040-61D) 1.3 GHz 4-way Modules (Cooling Chart Reference)
8-way 16-way
1 B C
2 B D
3 C D
4 C D
5 N/A E
6 N/A E
7 N/A F
8 N/A F
Number of I/O Drawers
(7040-61D)
1.3 GHz 8-way Modules (Cooling Chart Reference)
8-way 16-way 24-way 32-way
1 A B C C
2 B B C D
3 N/A C C D
4 N/A C D D
5 N/A N/A D E
6 N/A N/A D E
7 N/A N/A N/A F
8 N/A N/A N/A F
196 Site and Hardware Planning Information
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