Today I'm trying to reduce the power consumption of my [Proxmox Backup Server](/posts/2023/pbs_intro/). The HP Microserver is great for what I need, but it's kinda loud and I'm working on optimizing my power bill. The homelab is the largest single consumer of electricity aside from the air conditioning in the summer, so it's something I'm looking at heavily.

I tried doing S3 speep (normal suspend to RAM) and found that the Microserver doesn't support this. I then didn't have enough space on my 16G boot disk (microSD card) for a swap partition to hibernate to, and don't want to mess with the partition tables on my zfs drives to add one there, so hibernate is out too. This leaves me with actually fully shutting the system down and booting back up in the future. Downside to this is the RTC won't wake it back up, I need to have another system send a Wake on LAN magic packet. No big deal, I just need to make sure I send it early enough that the backups aren't scheduled to start until after the server is fully booted.

Blog post with all of the scripts:
https://www.apalrd.net/posts/2024/pbs...

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