Man, do yourself a favor and remove the shiny part of that HD cover. It is really easy to do and will drop your temps a bit. Also, if you have that 12V line already there, put some low-speed fans there to further drop the temps down (don’t really need much airflow to cool them down). Those WD drives run rather hot in those enclosures.
Thanks. That plastic film , yes it should be removed. I feel WD (that 14tb $200 deal) is less hot than those 6tb Seagate on the side. They all generate heat but they are warm not really hot. I did have several fans. I am running without fan now. My basement is not warm. And in summer time my basement is very cold.
I will re think the fan option. My problem now is messiness. All kinds of cables.
Yes, it should be removed together with the hard plastic that it sticks to
Those drives are meant to run just few minutes per day, so the compound effects of being hot is different than with chia. On the top of that, you get only 2 years warranty and shit WD RMA process if needed, and my understanding it is based exactly on the fact that when used more, those drives are running too hot. Really, just two guitar pics, and you are done, no latches are broken (comparing to Seagate nightmare).
By the way @jmz has a really nice similar setup, maybe you can look at his images.
It really depends on what you already have, and where you want to be tomorrow. If you have most of the guts (mb, CPU, RAM, …), you should be able to buy about 20 bays case on Amazon for about $200 (sure, used on ebay would be less expensive), and you will be able to make it really quiet. On the other hand, those rack mounted cases are rather noisy, so you would need to get few big holes in those to replace those whining small fans.
A system with 6 fans properly oriented for flow through cooling of 24 HDDs is not easy to find.
The price of this system including shipping is about the cost of ONE 18TB drive.
If you want to solve a particular problem, you need he right tool. After further research I found a review for this case on discord which said it was not good, so I guess this is not the best tool.