Port-side Exhaust
Eustacio Gadit
So, port side intake means the cold air enter the switch where the ports are and port side exhaust means hot is exiting from the port side. With Nexus switch you have the option to intake in front or the back.
Port side intake is suitable for mounting switches on a rack. In a rack setup, multiple switches can be installed consecutively, and hot air can be expelled through the rear air vent, maximizing the rack's cooling capacity.
Port side exhaust is suitable for mounting switches on a wall. Wall installation typically restricts airflow at the back of the switch, and port side exhaust allows cool air to enter from the back of the switch, pass through the internal components, and quickly expel hot air.
Port side exhaust is suitable for cabling scenarios that require access to the rear of the switch. Which ensures that the rear is not obstructed by a large number of cables or other obstacles. Hot air is expelled from the front air vent of the switch, allowing easier access to the ports and other connections at the rear.
Port side exhaust is also suitable for scenarios with high-density cabling requirements. In this case, the rear of the switch may be restricted, preventing sufficient space for heat dissipation. Port side exhaust can directly expel hot air outside the cabinet, reducing the space occupied within the cabinet and improving overall heat dissipation efficiency.
1. Port-side intake: In this configuration, air is drawn into the switch through the port side (the side with the ethernet or fiber ports) and expelled through the power supply side. This means that the cold aisle (where the cooler, ambient air is) should be on the same side as the ports. This configuration is typically used when switches are installed in a typical front-to-back (ports to the front) orientation in the rack.
2. Port-side exhaust: In this configuration, air is drawn into the switch through the power supply side and expelled through the port side. Therefore, the cold aisle should be on the same side as the power supplies. This configuration is typically used when switches are installed in a reverse (ports to the back) orientation in the rack.
In a data center, the choice between port-side intake and port-side exhaust is largely determined by the hot aisle/cold aisle layout of the center. The most common configuration in a data center is a hot-aisle/cold-aisle design.
Cold aisles: Racks are arranged so that the fronts of the servers (which typically include the network ports) face the cold aisle. Here, the servers pull in the cooler air to cool the internal components.
In most data centers, port-side intake is used for network switches mounted at the front of the rack (ports facing the cold aisle) to match the airflow direction of the servers. This ensures that the cooler air from the cold aisle is pulled through the switch, helping to keep the components cool.
In some cases, you might have a switch mounted at the back of the rack with the ports facing the hot aisle. In these cases, port-side exhaust is typically used. This is less common, but it can be useful for switches that are being used for out-of-band management or for certain types of high-density network setups.
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2008 VTX with a monsoon 340 engine here. Doing the spring startup and I am having a tough issue to diagnose. I checked all of the connections I could think of but when hook up the fake lake and start the boat up 2 things happen:
2. I notice that water is only coming out of the port side exhaust...almost nothing through the starboard exhaust. Not sure if this video link will work but here is a video of it: -iM03DZreXTmwmTPAZcnXJ_yJQdSYMFfj10
I have double checked the gasket on the impeller housing (I swapped impellers this year), the seaweed strainer gasket, the hose to the trans cooler, the big J hose on the engine was leaking a bit so I unseated that, cleaned it with my fingers a bit, then tightend it down hard and it isn't leaking anymore, I don't see any obvious leaks. I am at the point where I might try to disconnect and reconnect everything to make sure it is all sealed up properly. But it would be helpful if someone has seen this behavior before and can point me in the right direction. I know the fake lake doesn't always give the best water supply but I haven't had this issue in the past so I hesitate to launch it before I figure out what is going on.
So good news weird news. This morning I went out and checked the intake screen again as well as the trans cooler screen. Nothing, re-seated the intake hose to the impeller pump and tightened it down pretty hard. Readjusted the fake lake to get a better seal. Boat didn't overheat at all, didn't get above 170 and hovered 160 like it is supposed to. However, I still see no flow coming out of the starboard exhaust water outlet. Port side is flowing great, solid stream. Also checked the oil just to make sure there wasn't a crack in the engine block because I am paranoid and the oil looked fine.
Any thoughts about the poor flow through the starboard exhaust? I am going to call Tommy's today and pick their brain if they will let me. Wanted to launch the boat today so not sure if I should go ahead and hope for the best or get to the bottom of this first.
Is the boat listing to the port side? There is usually a crossover in the muffler that joins the exhaust before it exits. If the boat is leaning one way, the water could simply be running out the port side due to gravity.
My 2008 Hammerhead does the same thing on FaL. Hopefully the video link below works so you can compare your water output to my boat. The starboard side just sort of trickles out on the hose. You can see the hose gets squeezed by the impeller suction and I think it's just poor water flow on a garden hose.
When I ski or board behind the boat, it's dumping out big-time from both sides and I don't have any overheating issues and no overhead codes from the O2s on the starboard side manifold. I think you're in good shape (aka - normal behavior). My driveway has a slight tilt to the left too, so I attributed it to a combo of garden hose flow and non-level surface. This video is from 2021 and so it's been good to go for multiple seasons.
@BvrGuy I checked it this afternoon and turns out that it is listing...to the starboard, lol. The port side is higher than the starboard side. Not a ton but noticeable on a level. Kind of the opposite of what I would think if the list is causing the issue. Maybe there is some weird back pressure causing it to come out the port side instead of the starboard side?
@EchelonMike That video is very similar to the behavior of my boat but my boat is a bit more extreme. There are tiny little splashes coming out of the starboard exhaust (less than your video) but nothing solid. At least there is something coming out. I think I am going to take @ahopkins22LSV advice and run out and get a temp gun, run the engine a bit and check each manifold. if they are similar I'll just launch it tonight as planned.
Is there a way to run a hose directly though the manifold to make sure there isn't a clog? Or some air pressure? I suppose I could try the crossover hose but I am not sure which way the flow goes with that.
Heat gun results are in, there is about a 15 degree difference between the manifolds at idle. Port side was about 188ish starboard about 204ish. My gut instinct is that isn't big enough for alarm and it will likely balance out once we get the boat in the water. Any one else have thoughts?
The Cisco NXA-FAN-30CFM-F is an efficient, dependable back-to-front airflow fan module designed specifically for networking devices. With a port-side exhaust configuration, this fan ensures optimal cooling performance by expelling hot air from the device in a controlled manner.
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With its plug-and-play design, installing this fan module is hassle-free and requires no additional tools or complicated procedures. It seamlessly integrates into compatible Cisco network equipment to provide effective heat dissipation and prevent overheating issues that can potentially damage hardware components.
This is an action brought by complainant Ta Chi Navigation (Panama) Corp., S.A. ("Ta Chi") for exoneration of its steamship S.S. EURYPYLUS under the Fire Statute of the United States, 46 U.S.C. 182, and for limitation of damages under 46 U.S.C. 183. The action arises out of an explosion and massive fire on board S.S. EURYPYLUS on November 10, 1975 while the ship was at sea proceeding from Taiwan around the world. The explosion and fire resulted in the deaths of and injury to certain officers and members of the crew, and damages to cargo and belongings. As a result it became necessary to abandon the ship, and she became a constructive total loss. Various claimants have filed claims and answers denying Ta Chi's right to exoneration and/or limitation of liability and seeking full recovery of their claims for cargo damage, personal injury, and salvage, but these claimants were enjoined from proceeding and their claims were consolidated in one action in accordance with 46 U.S.C. 185.[1] The issue of liability only has been tried by the Court. At the commencement of the trial, the personal injury and death claims were settled as between those claimants and Ta Chi.
2. The petitioner, Ta Chi, is a corporation organized and existing under the laws of the Republic of Panama with its principal office and place of business in Taipei, Taiwan, and was at all material times hereto the owner of the steamship, S.S. EURYPYLUS.
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