So...how many 2.5" disks can you put in a Chenbro NR40700?
- Thread starter kapone
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This is made out of 2x6 lumber... it weighs probably close to 100lbs.
It aint tipping over or anything, and remember, this is only going to hold compute nodes, the heavy stuff is in the rack next to it.If 2x6 lumber can hold up a entire house...
Planning to use four of these on the front of the compute rack.
These are 20" fans, and although designed for ceiling/RV mounting, they're in fact DC brushless motor based fans. The actual fan in the housing is ~14" or so. They're 110v fans, six speeds, remote control, and bonus lights! (if needed).
At the lowest speed, with the light off, they use ~2-3w and ~25db at 1m! with a fantastic amount of airflow. And they're not even that expensive. ~$30 or so. I mean a few Noctuas will cost more than that and won't hold a candle to the airflow of one of these.
Four will cover almost all of the compute sleds in the rack, that need airflow (apart from some of the switches, PDUs etc). I may get ambitious and tie them into my Home Assistant with a few temp probes to change the speeds automatically (they use bluetooth).
We'll see how they work out.
These are 20" fans, and although designed for ceiling/RV mounting, they're in fact DC brushless motor based fans. The actual fan in the housing is ~14" or so. They're 110v fans, six speeds, remote control, and bonus lights! (if needed).
At the lowest speed, with the light off, they use ~2-3w and ~25db at 1m! with a fantastic amount of airflow. And they're not even that expensive. ~$30 or so. I mean a few Noctuas will cost more than that and won't hold a candle to the airflow of one of these.
Four will cover almost all of the compute sleds in the rack, that need airflow (apart from some of the switches, PDUs etc). I may get ambitious and tie them into my Home Assistant with a few temp probes to change the speeds automatically (they use bluetooth).
We'll see how they work out.
I think it is a cool idea, but I wonder if the bearings are designed for side load which will be a torque, vs the expected vertical load of the fan hanging...Could be over-thinking it too.
Maybe. I honestly don’t know yet.
These things are designed to be intake or exhaust, and designed to be mounted all sorts of ways in RVs.
we’ll see. Worst case? They underperform…back to Amazon they go…
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Kinda small for a box fan at 10", found this one but the price isn't wonderful: https://www.amazon.com/Vornado-Velocity-Digital-Removable-Variable/dp/B0DQLYB69J/
Coming along nicely...the main rack is essentially all storage now. The compute will be in the second rack I built.
That's 200 LFF bays, a few SFF bays and lots of PCI-e NVME inside as well. Over 2PB and counting...
That's 200 LFF bays, a few SFF bays and lots of PCI-e NVME inside as well. Over 2PB and counting...
Negative Ghostrider, the pattern...er...rack is full.
Just 3U space left, after relocating the switch stack to the rear and adding some perforated blanks to the front. (Ignore the temporary router/server in the front for now, it'll get moved).
The (updated) switch stack in the rear. Still reconfiguring/cleaning up cables, but was doing some quick/dirty testing. That's dual SX6036, dual ICX 6450s and a simple 24 port unmanaged switch for OOB access.
Just 3U space left, after relocating the switch stack to the rear and adding some perforated blanks to the front. (Ignore the temporary router/server in the front for now, it'll get moved).
The (updated) switch stack in the rear. Still reconfiguring/cleaning up cables, but was doing some quick/dirty testing. That's dual SX6036, dual ICX 6450s and a simple 24 port unmanaged switch for OOB access.
I must say that when I look at my own computer hardware, I start to feel like one of those pathological hoarders we see on TV, that accumulate at home any trash they collect on the road. But when I come on this forum I feel I am only a mild case!
That's pretty much on point.
On the compute side, I have a "small" cluster of low power machines, and a "big" cluster of dual CPU machines. Not all of them get used at the same time, but having them in place and ready to go, is...handy.
That's one of the reasons I had to build the second rack. I tried putting everything in the main rack, and it was just...unwieldy. Now...I have a whole 96" of height to play with for the compute side.
Ended up building fixed "rails" -ish, that the compute sleds can slide into (from the back). They have vertical and horizontal stops so that once the sled is in, it's locked in.
Test fitting a temporary compute sled...
This is starting to look like a DIY-ish version of an Open Compute rack...lol.
Test fitting a temporary compute sled...
This is starting to look like a DIY-ish version of an Open Compute rack...lol.
Starting to put together the compute sleds (I need a bunch of number crunchers...so, using a whole bunch of Supermicro x9/x10/x11 boards). Waiting for a few parts to come in, to repin a few PDB connectors. All HP platinum PSUs (I love these things!).
The compute sleds only need a NIC, but the risers do give me two x16 slots as well).
The compute sleds only need a NIC, but the risers do give me two x16 slots as well).
Fans/Fandeliers came in. Took off all the trimmings, leaving just the bare fan/housing. The LEDs are kinda squished/stuck inside the housing, so even though I don't care about the lights, I'm gonna leave them there.
The fan is just about 19.7" round and after taking off all trimmings, just shy of 5" deep. A 20"x20" air filter is...19.7"x19.7"... Just need to build box frames for the fans with the filter friction fit on the front and it should be good.
At speed 1 - Power consumption = ~3-4W with more than enough airflow (remember, I'll have 4x of these going down the full height of the rack).
The fan is just about 19.7" round and after taking off all trimmings, just shy of 5" deep. A 20"x20" air filter is...19.7"x19.7"...
Just need to build box frames for the fans with the filter friction fit on the front and it should be good.At speed 1 - Power consumption = ~3-4W with more than enough airflow (remember, I'll have 4x of these going down the full height of the rack).
So...after some temporary mounting and testing, turns out that 4x of these fans will have dead zones and won't cool parts of the rack. Well...six will...so six it is. More dismantling of the fan frames, leaving just the fan and the motor.
Started building two box frames with 3x of these fans each. Each box frame is 45" high, so two of them (with 6x fans) do cover the entire rack. I left ~1/2" of spacing on the front side of the box frames for air filters.
p.s. I decided to just stick the LED strips inside the box frame. Again, I don't care about them, but they're there...and might come in handy, if some light is needed.
Started building two box frames with 3x of these fans each. Each box frame is 45" high, so two of them (with 6x fans) do cover the entire rack. I left ~1/2" of spacing on the front side of the box frames for air filters.
p.s. I decided to just stick the LED strips inside the box frame. Again, I don't care about them, but they're there...and might come in handy, if some light is needed.