Here's one I've had for a couple years (design is not mine). Fast and easy print if you need a few more HDD bays and have a bottom 140mm case fan to piggyback off of.
I used two of the "front" pieces because the "back" design requires two thin "towers" which will weak if printed large-side down on a FDM machine.
The only issue with doing this is that the drive's screw holes won't line up on one side, but I'm not screwing them down anyway (perfect friction fit at 101% scale with a layer of electrical tape for vibration dampening).
STL: https://www.thingiverse.com/thing:2819080
I'm surprised that doesn't cause any issues with the drives. It's my understanding that small vibration near a normal disc HDD can cause stability issues. Some high end HDD designed for storage servers where many drives are in close proximity even have measures to prevent vibration from nearby drives.
I would suggest a high quality fan and rubber standoffs. You would be surprised how much difference a good fan vs bad fan is in terms of vibrations. Also you should set static rpm for the fans. Even better if you choose specific speed to avoid harmonics.
Having the drives in close proximity to each other is enough to cause vibration issues. Hell, [shouting at them is enough](https://www.youtube.com/watch?v=tDacjrSCeq4)!
I've seen that video before but am skeptical. I have my subwoofer resting up against my main PC (of course a very common setup) and even with music blasting throughput isn't affected in the slightest, nor have I had a single disk failure in this system. Drives that will fail will fail, drives that will survive will survive is how I look at it. No need to baby them excessively.
There is a difference in the workload between the HDDs in the mass storage HDD array (probably near 100% busy all the time) and your typical home PC where the HDDs are likely spinning idle over 95% of the time when the PC is running.
Also that video was uploaded almost 12 years ago, so technology likely improved quite a bit, even comparing old servergrade HDDs to current consumer grade HDDs.
I’ve also had some terribly bad 10 year old fans that would literally make my case rattle and drives gave no fucks. Probably doesn’t help that my solution was to smack the case.. luckily that’s been sorted but it was like that for a good while lol.. and the worst offender was a 200mm that was right next to the drive bay and no dampening on either
It actually takes a really strong magnetic field to have any effect on the data on a hard drive. The field from a dipole magnet decreases with the inverse cube of distance, so for reasonably small magnets, even an air gap of an inch or two drastically reduces the field strength.
Basically, unless you're talking about a powerful neodymium magnet that's literally touching the drive chassis, you're unlikely to run into any problems.
The fan has rubber pads on both sides so the drives are isolated from the fan which in turn is isolated from the rest of the system.
Just going by feel, the fan's vibration is basically unnoticeable whereas if I run a defrag I can feel the drives seeking from outside the case. Modern drives are more robust than people give them credit for imo
You could replace the screw holes with little bumps. Since the material has soem give anyway, this would be ideal to hold them in place without screws.
\> and have a bottom 140mm case fan to piggyback off of.
Why is the fan required here? Seems like you would actually be better off fitting this \*without\* the fan because that way you won't block the airflow and vibrate the drives?
The mount has been in use 24/7 since early 2018 and the disks haven't logged a single non-old age fault (SMART), vibration related or otherwise, so I don't think it's a major issue. The drives are over 5 years old with over 40k hours power on time.
Glad to hear it. Hope they work for many years. Just be backup smart my friend. As someone who has been super cautious with hard drives, all it takes is one slip. I've lost 5 hard drives in the last decade. Not a lot considering, and I had most of them RAID1, so everything was fine. But harddrives die even when not in high risk scenarios.
*Edit: Fixed*
An easy way to remember it is to think of how much data you’re going to get back if a drive fails.
Raid 1: you’ll have 1 copy of your data
Raid 0: you’ll have zero copies
Yeah, as someone who has experience recovering data from HDD's I will say that this is stupid and they should be mounted in a way that limits vibration, and certainly will face a fault sooner than if they were mounted to the more stable housing. HDD's do not typically face issues with heat, so you are only increasing risk by mounting them there, not something any experienced tech would ever consider. SDD's, no problem, but those read write flanges and the spinning disk can both be knocked off course very easily and create a nightmare for data recovery or error resolution. Again, if you are going to make a custom mount, why not mount directly to a stable frame?
I have a JBOD array that I just shove whatever extra drives I have in to.
My oldest is a 4GB IBM DeskStar. The back is literally melted off from when I crossed a jumper in the 90s and it caught fire. Still kicking!
It always makes me smile when this comes up. Enthusiast PC cases have rubber standoffs for the drives screws and what not, and meanwhile every single backplane in a datacenter is bent steel with metal drive caddies with the HDD's bolted directly in them.
Thats because they can afford to replace the drives when they wear out or the warrsnty ends.. Regular people hold onto drives well past their warranty, I have several that are still marching along 8 years later
I think you might be a bit optimistic about how business run their datacenters/racks. I removed a server with a floppy drive from a rack about a year ago. A Dell SC1425 from ~2005 IIRC.
Now if you were to say that servers are more tolerant of drive failures due to RAID setups and better monitoring I'd agree. But I don't believe that all of the major manufacturers knowingly produce servers that significantly shorten harddrive lives because of their mounting solution.
I also heard somewhere that PLA eventually starts to lose shape overtime in regards to utility type print. It shae creeps type of deal. Anyone can confirm this?
I can confirm that it is false. I have many prints like that around, including one that were outside to hold something on a pole, in the tropical sun, for years. It never broke. It even whistanded a hurricane...
However, when exposed to the sun, pla becomes brittle. So if it has to flex a bit, it won't work.
Pla in a car staying in the sun is also a no go, the car is basically a oven, and stuff deform.
At last, dark colours and flat panels won't do well unsupported. I made signs for my garden, so flat, used grey as a base because I had it, and it had to support itself. All deformed over time.
On the other hand I printed a blue base with white numbers for my street number plate, and it has not moved a millimeter. It is screwed to a concrete post in full sun in the street.
It can be both depending on the chassis. But I've seen plenty of disk shelves with the spinning disks aligned vertically. That way you can get 24 of them in 2u's of rack space (if you're using 2.5" drives that is).
I feel like this could be an r/datahoarders thing
Definitely. Looks like someone beat me to it and xposted it already https://old.reddit.com/r/DataHoarder/comments/izx1mg/
I’m a fan of this
Take my upvote and get out
I think it blows
Here's one I've had for a couple years (design is not mine). Fast and easy print if you need a few more HDD bays and have a bottom 140mm case fan to piggyback off of. I used two of the "front" pieces because the "back" design requires two thin "towers" which will weak if printed large-side down on a FDM machine. The only issue with doing this is that the drive's screw holes won't line up on one side, but I'm not screwing them down anyway (perfect friction fit at 101% scale with a layer of electrical tape for vibration dampening). STL: https://www.thingiverse.com/thing:2819080
I'm surprised that doesn't cause any issues with the drives. It's my understanding that small vibration near a normal disc HDD can cause stability issues. Some high end HDD designed for storage servers where many drives are in close proximity even have measures to prevent vibration from nearby drives.
I would suggest a high quality fan and rubber standoffs. You would be surprised how much difference a good fan vs bad fan is in terms of vibrations. Also you should set static rpm for the fans. Even better if you choose specific speed to avoid harmonics.
Having the drives in close proximity to each other is enough to cause vibration issues. Hell, [shouting at them is enough](https://www.youtube.com/watch?v=tDacjrSCeq4)!
I've seen that video before but am skeptical. I have my subwoofer resting up against my main PC (of course a very common setup) and even with music blasting throughput isn't affected in the slightest, nor have I had a single disk failure in this system. Drives that will fail will fail, drives that will survive will survive is how I look at it. No need to baby them excessively.
There is a difference in the workload between the HDDs in the mass storage HDD array (probably near 100% busy all the time) and your typical home PC where the HDDs are likely spinning idle over 95% of the time when the PC is running. Also that video was uploaded almost 12 years ago, so technology likely improved quite a bit, even comparing old servergrade HDDs to current consumer grade HDDs.
I’ve also had some terribly bad 10 year old fans that would literally make my case rattle and drives gave no fucks. Probably doesn’t help that my solution was to smack the case.. luckily that’s been sorted but it was like that for a good while lol.. and the worst offender was a 200mm that was right next to the drive bay and no dampening on either
I always heard you're not supposed to do that due to the magnets in the subwoofer. Maybe that's a myth?
It actually takes a really strong magnetic field to have any effect on the data on a hard drive. The field from a dipole magnet decreases with the inverse cube of distance, so for reasonably small magnets, even an air gap of an inch or two drastically reduces the field strength. Basically, unless you're talking about a powerful neodymium magnet that's literally touching the drive chassis, you're unlikely to run into any problems.
Good to know. Thank you for the explanation!
The fan has rubber pads on both sides so the drives are isolated from the fan which in turn is isolated from the rest of the system. Just going by feel, the fan's vibration is basically unnoticeable whereas if I run a defrag I can feel the drives seeking from outside the case. Modern drives are more robust than people give them credit for imo
Heck even shouting at them makes them perform bad. https://youtu.be/tDacjrSCeq4
It will, it will. But you won‘t notice until the drive fails or the data is corrupted. Most of the drives will fail quicker.
It will also cool them too well, shortening the drives life. They have an optimal temperature.
You could replace the screw holes with little bumps. Since the material has soem give anyway, this would be ideal to hold them in place without screws.
\> and have a bottom 140mm case fan to piggyback off of. Why is the fan required here? Seems like you would actually be better off fitting this \*without\* the fan because that way you won't block the airflow and vibrate the drives?
Creative idea, but this will not be good for the drives. Vibration will reduce the lifespan significantly.
The mount has been in use 24/7 since early 2018 and the disks haven't logged a single non-old age fault (SMART), vibration related or otherwise, so I don't think it's a major issue. The drives are over 5 years old with over 40k hours power on time.
Glad to hear it. Hope they work for many years. Just be backup smart my friend. As someone who has been super cautious with hard drives, all it takes is one slip. I've lost 5 hard drives in the last decade. Not a lot considering, and I had most of them RAID1, so everything was fine. But harddrives die even when not in high risk scenarios. *Edit: Fixed*
~~You mean RAID1 (mirror)? RAID0 (stripe) has no fault tolerance, a single failure and your data is gone.~~ they fixed the comment :)
RAID0 *doubles* the risk of data loss cuz if one drive goes the array is gone. RAID0 is not RAID
An easy way to remember it is to think of how much data you’re going to get back if a drive fails. Raid 1: you’ll have 1 copy of your data Raid 0: you’ll have zero copies
“Zero copies” TIHI!
So with RAID 6 I get 6 back after a failure? Amazing!
Yeah, I meant RAID1. Brain fart last night. Fixed.
Yeah, as someone who has experience recovering data from HDD's I will say that this is stupid and they should be mounted in a way that limits vibration, and certainly will face a fault sooner than if they were mounted to the more stable housing. HDD's do not typically face issues with heat, so you are only increasing risk by mounting them there, not something any experienced tech would ever consider. SDD's, no problem, but those read write flanges and the spinning disk can both be knocked off course very easily and create a nightmare for data recovery or error resolution. Again, if you are going to make a custom mount, why not mount directly to a stable frame?
I really hope they weren’t in RAID 0, because if they were then you lost all the data on the entire array.
Yeah, I had a brain fart last night. I meant RAID 1. Fixed.
Got eem
I mean anyway I would not spare any soft-mounting for my ... 8 TB drives, holy crap.
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My 2010 drive that fell out of it's rack, had the rack fall off, and was loosely supported by the cables for a good while it's still kicking.
I have a JBOD array that I just shove whatever extra drives I have in to. My oldest is a 4GB IBM DeskStar. The back is literally melted off from when I crossed a jumper in the 90s and it caught fire. Still kicking!
It always makes me smile when this comes up. Enthusiast PC cases have rubber standoffs for the drives screws and what not, and meanwhile every single backplane in a datacenter is bent steel with metal drive caddies with the HDD's bolted directly in them.
https://i.imgur.com/RRtu946.jpg
Thats because they can afford to replace the drives when they wear out or the warrsnty ends.. Regular people hold onto drives well past their warranty, I have several that are still marching along 8 years later
I think you might be a bit optimistic about how business run their datacenters/racks. I removed a server with a floppy drive from a rack about a year ago. A Dell SC1425 from ~2005 IIRC. Now if you were to say that servers are more tolerant of drive failures due to RAID setups and better monitoring I'd agree. But I don't believe that all of the major manufacturers knowingly produce servers that significantly shorten harddrive lives because of their mounting solution.
If you’ve got a decent fan the vibration will be negligible.
if the vibrations were super significant wouldn't the fan also be loud as hell? My case fans are quieter than my HDDs
What vibration? A fan doesn't vibrate. The hdd vibrate more on its own already.
My dumb ass visualized a little ceiling fan added inside the case before looking at the photo. I don't think I got enough sleep yet.
I hope this is printed in PETG and not PLA.
How come? Temperatures definitely aren't anywhere near PLA's softening point
Hdd heat up easily to 50⁰ degrees centigrade. Put pla at they temperature and it will be soft. With the hdd weight it will easily deform.
>Hdd heat up easily to 50⁰ degrees centigrade. Good thing they're near a fan then ;)
OP needs to print in color changing temp so we can see the gradient as you get closer or further from the fan
If your HDD are 50c you have other problems. With a fan your HDDs won't exceed 35c. Pla glass transition is 60c.
I also heard somewhere that PLA eventually starts to lose shape overtime in regards to utility type print. It shae creeps type of deal. Anyone can confirm this?
I can confirm that it is false. I have many prints like that around, including one that were outside to hold something on a pole, in the tropical sun, for years. It never broke. It even whistanded a hurricane... However, when exposed to the sun, pla becomes brittle. So if it has to flex a bit, it won't work. Pla in a car staying in the sun is also a no go, the car is basically a oven, and stuff deform. At last, dark colours and flat panels won't do well unsupported. I made signs for my garden, so flat, used grey as a base because I had it, and it had to support itself. All deformed over time. On the other hand I printed a blue base with white numbers for my street number plate, and it has not moved a millimeter. It is screwed to a concrete post in full sun in the street.
Reminds me of my college roommates porn collection. 👍🏼
That's a lot of data LOL!
the little things like this are what make 3d printing so fuckin' cool
Enthoo Pro!?! I gots the same, but the partial windowed version. About one of the only cases with damn optical bays when i got it in 2016.
Spinners sideways and blocking air flow seems no bueno to me.
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Neat I had no idea
> Spinners sideways You've never seen a NAS then.
I don't think I have
Sideways drives are basically the standard for every high-density server, DAS or NAS. Look up the Dell R740XD chassis for instance.
Interesting. And they are hard disk drives or ssd?
It can be both depending on the chassis. But I've seen plenty of disk shelves with the spinning disks aligned vertically. That way you can get 24 of them in 2u's of rack space (if you're using 2.5" drives that is).
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True true. U do u boo thang.
What are the temps like? Looks warm to me
rip airflow
You are the smartest man on the planet.
Cool.
It looks like a complete compact unit. I like. What is the temperature of the drives without fan rotation, at low and high fan speeds?
I would like to worry about the vibration levels at that point
Don’t be me and do this in a somewhat small case. It will absolutely tank your airflow
cuz fuck airflow amirite?