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Optimize power consumption (derpzilla.net)
submitted 7 months ago* (last edited 7 months ago) by Kwa@derpzilla.net to c/selfhosted@lemmy.world
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So I have finally built my NAS. I used an N100 CPU because I saw it has low power consumption.

Right now I have 2 NVMe SSDs and 2 HDDs. I have installed proxmox on the 2 SSDs as RAID1. I have not partitioned the HDDs yet, they are just plugged in and powered on.

Just booting into proxmox, without any VMs or containers running, I am pulling 45W from the wall. This looks super high to me, and I’m afraid that starting to use the HDDs and running some VMs may double this…

I don’t have much references, but I have an Odroid with an external self-powered HDD, it is using 5W. I have a raspberry pi 4 with an external HDD, the raspberry is pulling 3W and the HDD 3W.

With these data, I was thinking I wouldn’t go over 20W. 45W is enormous and not something I can run 24/7, kind of a fail for a NAS…

Have I done something wrong or is it just how much it’s supposed to pull?

Edit: I have come across powertop. Using the auto tune, I was able to drop to 33-35W. I have unplugged the HDDs and dropped to 22W. I guess I cannot go lower, this may be because of the PSU or the 2 NVMe

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[-] Cyber@feddit.uk 3 points 7 months ago

Another way of reducing your overall power consumption: Do you need a NAS to be on 24/7?

My NAS is a NAS - just storage. It comes on and spins the 5x HDDs for a few hours in the day then shuts down. It's a NAS, I don't need to access my files at night when I'm asleep.

My VM host is a low power box with passive cooling which uses a SSD and runs my (mostly idle) VMs 24/7 for a few Watts.

So, maybe splitting up your requirements might save some power?

[-] Kwa@derpzilla.net 2 points 7 months ago

I planned to share it with my family. As I won’t be the only user, this is not ideal. Besides I run automatic backup and planned to also store them in the NAS. So again if it’s off half the time, this is not ideal.

this post was submitted on 15 Mar 2024
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