This tenant's object store can't hold its full replica set — fewer than the durability tier's copies are placed because the fleet is short on aggregate SSD.
Fix the capacity: add or grow storage hosts until there's room for another whole copy of the bucket (the Services > Object storage page shows placed vs target copies), or lower the bucket's durability tier.
Buckets shard across hosts, so total free SSD is what matters, not any single host — but each copy still needs to fit across the fleet. The incident clears once every copy is placed.
