If Scrubs Hurt, Your ZFS Design Is Broken
Summary
The Klara article argues that ZFS scrub maintenance can cause production latency if pools aren’t sized for ongoing maintenance workloads. It explains how pool design, fill ratios, and metadata overhead impact scrub and resilver performance and presents metadata offload with a special VDEV as a practical solution. The piece includes concrete commands and guidance for implementing the approach and emphasizes planning for maintenance in storage design.