^The only fully metal drive bays I'm familiar with are all for the notebook form factor. Most of them use trays too.
FWIW I wouldn't want to put more than 10 fullsize SATA drives in a single tower enclosure, no matter who makes it. 10 drives cranks out about as much heat as I think standard air cooling (and a fan array that won't blast your ears out) could handle.
-40hz
OK, if we take that into consideration, that might actually make the decision easier. So most of these big towers have 9 bays, so let's say 9 drives per tower max. that also reduces the cramming of drives into those cages, which should be better for air flow. For more drives, I'll just duplicate towers...18 drives --> 2 towers, 24 drives--> 3 towers.
and I'll just buy single drive bays from the same manufacturer...here's a good video review:
this is a good option because it maximizes modularity too. if i want even numbers for whatever reason, i do 8 drives per tower. and the spare bay i can use for a lcd display for temp or something. I'm liking this option.
Yes, I'd like it to be as quiet as possible for normal house conditions. I was wondering if this is a situation where'd i'd have to leave the ac running 24/7 (i don't necessarily like that). Or can i have a fan on 24/7 and the ac on only when i'm home? Worst case scenario, i was thinking of modifying the ac system so that one room gets 24/7 ac. i have my license for that, so i should be able to figure that out!
So now, it's looking like...8-9 drives per tower. No fancy cooling necessary other than fitting the tower with it's default fans. perhaps a room fan also. the storage tower(s) can be connected to my current desktop, or i can build a new desktop. I kind of have this current one doing everything just the way i like, i don't want to install a server OS on it now and go through all that, so maybe i'll make a new one.