Noise Levels with Multiple Hard Drives

I’m planning on building a backup server in the future and I’m planning on using 4 20TB NAS drives in a RAID10 setup and my OS of choice is going to be TrueNAS Scale and I’m planning on having Nextcloud for photo backups.

So from looking at this page below:

I noticed that WD NAS drives have an idle noise level of 20dB, which makes me think I should go with that over Seagate drives which have a higher decibel reading. However, what if I have 4 20TB WD UltraStar HC560 hard drives? If I put them in my 4U rack chassis along with hot-swappable bays that I plan on building on.

Of course, I plan on asking for recommendations regarding choosing server components, although my use-case is for backing up all of my data and I already have a Zidoo Z9X Pro Media Player for streaming movies direct to my home theater. And yes, the fan in the Rosewell hot-swap can be a factor when it comes to noise, but I am focusing on the hard drives. Plus, power consumption is the secondary factor and speed is the last. Idling is the most important part when a server is not in use.

Oh, and the reason for buying the 20TB drive is for long-term storage of videos. I’ve uploaded videos to my channel on Odysee and I would really want a place to store my videos in. Especially if I’m going to be doing commentary/let’s plays of video games.
https://odysee.com/@GraysonPeddie:6

My question is, if I load up 4 hard drives in RAID10 each idling at 20dB, how can I find out how loud it’s going to be without buying 4 of of the NAS drives first?

For what it’s worth sitting on my desk, is my is my gaming machine with two WD Gold drives in it (24 TB and a 22 TB). Not that they are horribly loud, but I can clearly hear them.

On the opposite side of my desk sits my NAS with 16 WD Red Plus drives. I’m sure if I really listened I would hear them, but they are definitely quieter than the Gold drives, I do not notice them running.

My HTPCs, I’m using HGST drives, and they are more along the lines of the Gold, drives. You can definitely hear them.

I don’t touch Seagate stuff, so none of those to compare too.

I guess my question would be how silent do you need it to need it to be? Usually a NAS is tucked away in a location where it doesn’t matter so much.

I do not have a dedicated room for a home server/NAS, but I can tell you that my existing home server is about 8.5 to 9 feet from my chair and my home server.

I found it depends how active the drives are. If this is just a backup system it should be quiet.

If this device must be silent and must sit next to you, then you could build out a desktop PC instead. That is the route I took. It takes less power and is quiet. My box has two Western Digital Blue drives that act as my internal-NAS backup (the box does allow for four), one nvme and SSD drives that all my computing run on.

I’m not having my backup server sit next to me.

Thanks everyone.

I guess it depends on which “WD” drives you’re talking about.

I’ve been happy with 10 HGST NAS drives sitting under my desk in a 4U chassis, and similar (though mine are 5bay) hot-swap enclosures. Low-level background white noise at idle, and head chatter is quieter than my keyboard when typing.

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Western Digital acquired Hitachi Global Storage Technologies (HGST) in 2012.

I would probably go for either the Western Digital UltraStar or Gold drives due to the low idle noise. Honestly, I do not understand why hard drive companies acquire other hard drive companies but I guess I’ll do some research.

Thanks everyone.