},
            "NoncurrentVersionExpiration": {
                "NewerNoncurrentVersions": 5
            }
        }
    ]
}
```
Note: This rule has an implicit zero NoncurrentDays, which makes the expiry of those 'extra' noncurrent versions immediate.

#### 3.2.b Automatic removal of all versions (MinIO only extension)

## Upgrading MinIO

Upgrades require zero downtime in MinIO, all upgrades are non-disruptive, all transactions on MinIO are atomic. So upgrading all the servers simultaneously is the recommended way to upgrade MinIO.