Please stop leaving stuff like this:
This is clearly a whole stack next to its enclosure. Here on the floor it gets absolute minimal cooling and this particular stack this morning sounded like a jet engine. There are holes in the floor in the bottom of the enclosure which is where air either gets sucked out to be cooled, or chilled air gets pumped in. By leaving the stack out of its enclosure, you are bypassing all the lovely cold air goodness:
Please do not leave open holes in server room floors. As the floor is raised it also acts as a duct for cold air, which flows through the aforementioned holes in the bottom of the server enclosures. Holes like this allow cold air to escape in to the server room before actually cooling the servers, and is a breach of H&S as you could very easily break an ankle in them (seen it myself, nasty):
Please do not obstruct any grilles, ever. Even if there is clearly no airflow, these ducts are there for a reason. In this case, this comms room runs on a single up-flow unit. The aforementioned interruptions to the airflow in the comms room meant that the second unit was called for, but the air flow is clearly impeded by a box, making that unit largely useless. Just because a duct isn't flowing, doesn't mean it's not in use. These systems turn themselves off and on all the time. This is also not how a comms room should be kept:
Ceiling tiles. Please don't ever leave them out, this again allows your nicely air conditioned air to escape in to a ceiling void which will easily soak up all the cold air pumped out by your air conditioning units.
I was called out this morning as the VESDA (stands for Very Early Smoke Detection Alarm) triggered due to the heat. We were at 40deg celsius in this comms room and it was still rising. Luckily I managed to reset all our alarms and crank the cooling to maximum but suffice to say these servers would've fallen over had I arrived a bit later.
Thanks for reading, your friendly HVAC engineer <3
This is clearly a whole stack next to its enclosure. Here on the floor it gets absolute minimal cooling and this particular stack this morning sounded like a jet engine. There are holes in the floor in the bottom of the enclosure which is where air either gets sucked out to be cooled, or chilled air gets pumped in. By leaving the stack out of its enclosure, you are bypassing all the lovely cold air goodness:
Please do not leave open holes in server room floors. As the floor is raised it also acts as a duct for cold air, which flows through the aforementioned holes in the bottom of the server enclosures. Holes like this allow cold air to escape in to the server room before actually cooling the servers, and is a breach of H&S as you could very easily break an ankle in them (seen it myself, nasty):
Please do not obstruct any grilles, ever. Even if there is clearly no airflow, these ducts are there for a reason. In this case, this comms room runs on a single up-flow unit. The aforementioned interruptions to the airflow in the comms room meant that the second unit was called for, but the air flow is clearly impeded by a box, making that unit largely useless. Just because a duct isn't flowing, doesn't mean it's not in use. These systems turn themselves off and on all the time. This is also not how a comms room should be kept:
Ceiling tiles. Please don't ever leave them out, this again allows your nicely air conditioned air to escape in to a ceiling void which will easily soak up all the cold air pumped out by your air conditioning units.
I was called out this morning as the VESDA (stands for Very Early Smoke Detection Alarm) triggered due to the heat. We were at 40deg celsius in this comms room and it was still rising. Luckily I managed to reset all our alarms and crank the cooling to maximum but suffice to say these servers would've fallen over had I arrived a bit later.
Thanks for reading, your friendly HVAC engineer <3
