[singron]

Unless garage has a special mitigation against this, usually performance gets much worse in large clusters as the filesystem fills up. As files are added and deleted, it struggles to keep nodes exactly balanced and a growing percentage of nodes will be full and unavailable for new writes.

So in a high throughput system, you may notice a soft performance degradation before actually running out of space.

If you aren't performance sensitive or don't have high write throughput, you might not notice. This is definitely something you should be forecasting and alerting on so you can acquire and add capacity or delete old data.

If you really don't like the idea of everything falling over at the same time, you could use multiple clusters or come up with a quota system (e.g. disable workload X if it's using more than Y TiB).