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What a clever way that rack was - hanging like that. Love it and my head is spinning how I should do this with both my battlestation-PC, NAS, routers and everyt

What a clever way that rack was - hanging like that. Love it and my head is spinning how I should do this with both my battlestation-PC, NAS, routers and everything.

walterbell 7y ago
Vertical mount may require a change in airflow/fan direction.
- finnjohnsen2 7y ago
  Yes, I was initially thinking the same, then I couldn't quite figure out exactly why so? The first thing that comes to mind is dust build-up, but that happens anyway in standard PC chassis also. Second is that heat goes up, which meens "forward" in the rack. So I assume blowing upwards/forwards is smarter than blowing down/back, as you're pissing against the wind instead of with it. Other than this second principle, I can't figure out anything else to worry about....?
  - walterbell 7y ago
    Most rack chassis have front fans which send air to the back of the chassis, with heatsinks oriented with direction of airflow. Air is forced from the front to the back, passing through the heatsink fins. If vertically mounted with the rack "front" at the top, the forced airflow down will be in the opposite direction of convention airflow up. Fans may have to spin faster/louder to achieve the same level of cooling. If the front fans are reversed, the fan airflow will be aligned with convection, but will immediately exhaust from the front instead of being aimed squarely at heatsink fins. The intake vents at the back of the chassis will provide sources of air, but are likely not uniformly distributed (compared to the fans) across the width of the chassis. For a home server that is mostly idle, there may not be much difference, but the safest path is to run some stress tests with different cooling configurations. Edit: some chassis have back-to-front airflows, http://thenetworksherpa.com/airflow-is-important/ http://thenetworksherpa.com/airflow-is-important/

What a clever way that rack was - hanging like that. Love it and my head is spinning how I should do this with both my battlestation-PC, NAS, routers and everything.

walterbell 7y ago

Vertical mount may require a change in airflow/fan direction.

finnjohnsen2 7y ago
Yes, I was initially thinking the same, then I couldn't quite figure out exactly why so? The first thing that comes to mind is dust build-up, but that happens anyway in standard PC chassis also. Second is that heat goes up, which meens "forward" in the rack. So I assume blowing upwards/forwards is smarter than blowing down/back, as you're pissing against the wind instead of with it. Other than this second principle, I can't figure out anything else to worry about....?
- walterbell 7y ago
  Most rack chassis have front fans which send air to the back of the chassis, with heatsinks oriented with direction of airflow. Air is forced from the front to the back, passing through the heatsink fins. If vertically mounted with the rack "front" at the top, the forced airflow down will be in the opposite direction of convention airflow up. Fans may have to spin faster/louder to achieve the same level of cooling. If the front fans are reversed, the fan airflow will be aligned with convection, but will immediately exhaust from the front instead of being aimed squarely at heatsink fins. The intake vents at the back of the chassis will provide sources of air, but are likely not uniformly distributed (compared to the fans) across the width of the chassis. For a home server that is mostly idle, there may not be much difference, but the safest path is to run some stress tests with different cooling configurations. Edit: some chassis have back-to-front airflows, http://thenetworksherpa.com/airflow-is-important/ http://thenetworksherpa.com/airflow-is-important/