McGarrah Technical Blog

Backlog of Posts from 2024

· 2 min read

My past write up for a Backlog of Posts had all the things that I wanted to write about in mid-2024. It has been updated with links to the released posts that covered each as I finished up in 2024. I got a lot of them written but the backlog of drafts and things I wanted to write about also grew as I picked off drafts and added new posts.

Power Supply upgrade for GPUs in the Homelab

· 3 min read

I want an extra ~350w of power available for a GPU that cannot run off PCIe bus power of 75w or 25w in some very old Dell Optiplex 990 Mini Tower nodes in my Proxmox cluster.

When one of my power supplies died earlier and I bought on eBay a NEW 750W Dell OptiPlex 9010 990 790 Power Supply Replace / Upgrade that was ~750w and the same form factor as those nodes PSU. This was just fast purchase to grab something that would ship the next day with no plan for an upgrade but I did pay attention that was both better and newer with a warranty.

So I have one machine that has the extra wattage available for a much better GPU like a Nvidia GeForce RTX 3060 12Gb.

Ceph Cluster Complete Removal on Proxmox for the Homelabs

· 6 min read
How to completely remove a broken Ceph cluster from Proxmox — every service, package, config file, and orphaned mount point — so you can start fresh.

Linux Disk I/O Performance in the Homelab

· 5 min read
Quick disk I/O benchmarks comparing eMMC and USB3 storage on Dell Wyse 3040s — understanding the performance characteristics of your storage tier before making capacity decisions.

Posts