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System reliability guidelines

Review the system reliability guidelines to ensure proper system cooling and reliability.

Make sure the following requirements are met:
  • To ensure proper cooling, the Flex System chassis is not operated without a compute node or node bay filler in each node bay.
  • When the compute node comes with redundant power, a power supply must be installed in each power-supply bay.
  • Adequate space around the compute node must be spared to allow compute node cooling system to work properly. Leave approximately 50 mm (2.0 in.) of open space around the front and rear of the compute node. Do not place any object in front of the fans.
  • For proper cooling and airflow, refit the compute node cover before you turn the power on. Do not operate the compute node for more than 30 minutes with the compute node cover removed, for it might damage compute node components.
  • Cabling instructions that come with optional components must be followed.
  • A failed fan must be replaced within 48 hours after malfunction.
  • A removed hot-swap fan must be replaced within 30 seconds after removal.
  • A removed hot-swap drive must be replaced within two minutes after removal.
  • A removed hot-swap power supply must be replaced within two minutes after removal.
  • Every air baffle that comes with the compute node must be installed when the compute node starts (some servers might come with more than one air baffle). Operating the compute node with a missing air baffle might damage the processor.
  • All processor sockets must contain either a socket cover or a processor with heat sink.
  • When more than one processor is installed, fan population rules for each compute node must be strictly followed.