McGarrah Technical Blog

Power Supply upgrade for GPUs in the Homelab

· 3 min read
Evaluating a 750W Dell OptiPlex PSU upgrade to support a discrete GPU in an aging Proxmox homelab node, with a breakdown of PCIe and connector power limits.

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.

Google Wifi running OpenWRT

· 1 min read
Repurposing first-generation Google Wifi units by flashing OpenWRT using the SuzyQ CCD cable and Closed Case Debugging.

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