Synthèse
When broker disks fill up, the natural response is to add disk. Storage modification is a managed operation and can introduce a cooldown window before another storage change is allowed. That matters during an incident. If disks are filling quickly and the first expansion is too small, the cluster may need another expansion before the cooldown expires. In our case, this extended recovery time. We had to wait for the managed service operation window to clear before adding enough storage to recover
When broker disks fill up, the natural response is to add disk. Storage modification is a managed operation and can introduce a cooldown window before another storage change is allowed. That matters during an incident. If disks are filling quickly and the first expansion is too small, the cluster may need another expansion before the cooldown expires. In our case, this extended recovery time.
We had to wait for the managed service operation window to clear before adding enough storage to recover safely. The lesson was to avoid small, incremental storage increases during a crisis. If storage must be expanded under active pressure, the safer move is to add enough headroom to survive the full cooldown window and the expected backlog.