deep-dive
Wear Without Writes
One NVMe's reported wear sped up 4.5× the evening its writes almost stopped. Its spare blocks and error counters say the flash never noticed.
SMART
deep-dive
The Disk With No S.M.A.R.T.
Six months of drive monitoring pointed at the wrong device. The one doing three times the writes has no S.M.A.R.T. at all.
deep-dive
The Wear That Wasn't
An NVMe alert at 82% used life, on drives with full spare capacity and zero errors. The wear number turned out to be a clock, not an odometer.
homelab-journey
Cluster Observability Part 6: Hardware Health Dashboards and Alerts
Grafana dashboards and 19 Prometheus alert rules for ZFS, SMART, disk temperature, fan speed, and Garage health — with manufacturer-sourced thresholds.
homelab-journey
Cluster Observability Part 5: Hardware Health Collectors - ZFS, SMART, and Thermal
Adding ZFS, SMART, and thermal collectors to the Bletchley cluster — and three ARM64 image attempts before finding one that actually works.