McGarrah Technical Blog

Proxmox Ceph settings for the Homelab

· 6 min read
Tuning Ceph scrub and deep-scrub intervals to reduce wear on spinning rust drives in a homelab cluster — spreading daily scrubs over 7 days and weekly deep scrubs over 28 days.

ProxMox 8.2.2 Cluster on Dell Wyse 3040s

· 14 min read
Building a three-node Proxmox 8 + Ceph test cluster on Dell Wyse 3040 thin clients to safely evaluate SDN and Ceph configuration changes without risking the semi-production cluster.

Debian 12 on Dell Wyse 3040s

· 8 min read
Installing Debian 12 on Dell Wyse 3040 thin clients: BIOS setup, Ventoy boot, the GRUB EFI removable media fix for the bad BIOS, and the dw_dmac blacklist that prevents lockups on shutdown.

Dell Wyse 3040 CMOS CR2032 Battery Replacement

· 5 min read
Replacing the proprietary CMOS battery connector on Dell Wyse 3040 thin clients using heat shrink tubing and standard CR2032 cells — $23 for nine units versus $90 for pre-made replacements.

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