Power Supplies; Fan Cooling Capacity - Compaq 112726-001 - ProLiant - 6500 Technology Brief

ECG078/0698
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ECHNOLOGY RIEF
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The ProLiant 7000 Server provides investment protection by retaining essential system
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components and the chassis serial number. When customers upgrade previously purchased
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ProLiant 7000 Servers to a Pentium II Xeon four- or eight-processor (4- or 8-way) configuration,
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they will leverage the following components:
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Chassis
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Rack mounting kit
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Serial number
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Agency labels
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Power supplies

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Memory DIMMs (4-way upgrade only)
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Hard disk drives and backplanes
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Integrated Management Display
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CD-ROM, tape, and floppy drives (4-way upgrade only)
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All PCI adapter boards
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Keyboard
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Monitor
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The upgrade will reduce the total cost of ownership over the lifetime of the server, including
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administrative and hardware costs. Because many enterprise operating systems, application
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software installations, and warranties are linked to the hardware serial numbers, continuation of
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the chassis serial number reduces administration costs.
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The chassis design and replaceable components of the ProLiant 7000 allow unprecedented
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flexibility. Early engineering analysis shows that the Pentium II Xeon processor and the 100-
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MHz bus it supports create more power and thermal load than the current Pentium Pro-based
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systems. In planning for the Pentium II Xeon processor and 4-way requirements, Compaq
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engineered the ProLiant 7000 power supplies and chassis with "headroom" to accommodate this
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additional load.
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Power Supplies
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The ProLiant 7000 design allows the intelligent power supplies to share the power load. With
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. . three power supplies installed, there is enough power to run up to eight processors and still
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maintain redundancy. In a redundant configuration, the supplies deliver up to 1500 W; while in a
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nonredundant configuration, they deliver up to 2250 W of power. This far exceeds typical power
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configurations for SMP servers, which range in maximum power capabilities from 700 to 840 W.
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Fan Cooling Capacity

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The fans have also been designed with extra "headroom" to allow for future growth paths with
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additional processors. As mentioned previously, the fans have both high- and low-speed settings.
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Performance testing of the ProLiant 7000 shows that even in 35ºC ambient air with all four
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processors loaded, the fans maintain adequate cooling inside the box while running at low speed.
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The excellent fan performance and the extra room inside the chassis provide ample airflow and
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cooling to support a future upgrade to eight Slot 2 processors.
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