Hetzner block storage not actually highly available?
Hetzner advertises its block storage volumes as highly available: “Highly available SSD storage and redundant data storage.”
However, their own maintenance notice seems to suggest otherwise:
>Maintenance volume pool 85
>Status: In progress
>Affected systems: Cloud Volume
>Start: 2026-07-03 08:26 UTC+0 Description
>Due to planned maintenance, volumes located in volume pool 85 are only partly available.
We have been affected by this partial outage, and the maintenance is still showing as ongoing after more than 8 hours.
What is also concerning is that this maintenance was not communicated in advance, and it does not appear on Hetzner’s public status page. As far as I can tell, it is only visible to affected clients.
Am I misunderstanding how Hetzner defines “highly available” for block storage volumes, or is this expected behavior?