5400rpm or 7200rpm for a nas

slower rpm drives will be better choice for noise, power consumption, heat etc but not many are that speed, I think one of my toshiba drives are and some wd green but they're shifting to 7200rpm.

just checked some wd red are 5400 others 7200rpm.
 
There is no "recommended speed" - as surely it depends on what other parameters you value for your NAS?

E.g.
- Noise (7200rpm is louder)
- Sequential transfer rate (7200rpm will be slightly higher), but again might be completely irrelevant if your use case is mostly reading (e.g. media), or if you want to transfer across the network at 10Gbps and therefore need to look at either all SSD storage, or at least SSD Cache.
- Reliability (in theory 5400rpm should be slightly more reliable, but beware some of the slower NAS drives are also SMR shingled magnetic recording, which aren't ideal)
 
Armageus said:
There is no "recommended speed" - as surely it depends on what other parameters you value for your NAS?

E.g.
- Noise (7200rpm is louder)
- Sequential transfer rate (7200rpm will be slightly higher), but again might be completely irrelevant if your use case is mostly reading (e.g. media), or if you want to transfer across the network at 10Gbps and therefore need to look at either all SSD storage, or at least SSD Cache.
- Reliability (in theory 5400rpm should be slightly more reliable, but beware some of the slower NAS drives are also SMR shingled magnetic recording, which aren't ideal)
Click to expand...

I'd love to have SSD in my NAS's..alas 16TB SSD don't exist and if they did they would be extortionate pricing. If it was doable have 3 SSD with one regular HD and use that last drive if I needed it for constant writing.

For music etc usually write once for a well sorted music library, unless converting it from one codec to another either flac 1.0.0 to 1.4.3, or using higher compression- could save quite a lot of space doing that.
 
I'm not worried about the noise as the NAS will be out of the way, I won't be transferring across the network at 10GB

It's going to be 50 50 transferring and will be used for media playing.
 
Depending on what capacity you're after, you might not get any choice as the larger drives are all 7200rpm.
I'm working with an odd one of 5640rpm at the moment: two 8TB WD Red Plus plus a matching pair of WD Whites shucked from their Elements shells. Only another 16 hours 'till they finish initialising.....
 
With raid arrays, latency effects multiply (or our at least additive)...i would stay away from 5400rpm for raid arrays and definitely away from SMR which would be all but useless (unless you require close to no performance)
 
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