▲ 10 r/zfs
Is there a recommended maximum utilization for an individual vdev in a striped mirror pool?
Should I consider 80% on mirror-0 a concern even though the overall pool is only 32% full? And would there be a meaningful performance/reliability disadvantage (fragmentation on mirror0?) to a situation such as:
mirror-0: 90–100% used
mirror-1: 10–20% used
while the overall pool still has plenty of free space?
I'm particularly interested to know if there is a "vdev-level utilization threshold" that you guys recommend for striped mirrors, as opposed to the usual "keep the pool below 80%" advice.
The workload is mostly cold/immutable data, but new data is continuously added over time.
u/BluePulasky1 — 12 days ago