Replacing a disk and expanding the ZFS pool

Replacing a disk and expanding the ZFS pool
My main ZFS pool consists of two RAID-Z2 VDEVs with eight disks; 8×4 TB 6×8 TB + 1×4 TB + 1×2 TB My 2nd VDEV is a mix of disks, as I didn’t have the 💰 to buy all 8 TB when setting it up. The smallest disk is the limiting factor, so currently the capacity is only 8×2=16 TB (minus two disk parity usable). I just bought a new 8 TB disk, so by replacing the 2 TB I will double the capacity!
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Moving to a new house

Moving to a new house

So we bought a new house — now to disassemble everything and prepare to move!

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Stack lights for Alertmanager using Raspberry Pi

Stack lights for Alertmanager using Raspberry Pi

I’m using Prometheus to monitor my home office and homelab, I figured it would be cool to have a stack light show the active warnings and alerts from Alertmanager. So I made a HAT (Hardware Attached on Top) for the Raspberry Pi to drive a five-colored stack light.

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Quieting down the Unifi 16XG switch

Quieting down the Unifi 16XG switch
Late 2018 I finally pulled the trigger and bought a Unifi 16XG 10GbE switch, I’ve wanted one for a long time. When I plugged it in for the first time, I realized it was pretty loud… It was the loudest thing in my rack — bummer. I’m used to the Unifi switches having temperature controlled fans; the 16XG however does not. I’ve read about people replacing the fans on the USG-PRO-4 with ultra-silent Noctua fans.
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Homelab ventilation project

Homelab ventilation project
The homelab is in my home office, man-cave, workshop — which is in the basement. The room is pretty well insulated, and heat generated here, mostly by the homelab, stays here. I needed a way to keep the temperature down in the hot summer months and during the cold winters. Well — this is it! Table of contents Getting rid of the window The vents Ducts and AC AC results Getting rid of the window The outside wall is concrete and concrete blocks — pretty thick.
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