On 21 May 2025 at 02:45 UTC, Wasabi’s Tokyo vault was impacted by system errors, causing client requests to result in 5xx errors for any API calls to their S3 buckets. This issue was due to an internal failure in the Tokyo Region where the backend server had a hardware fault, impacting the cluster of which it was a member. Our Operations Team identified the failure and took corrective action by performing a cluster failover to resolve the issue, which returned the service back to an operational state at 10:55 UTC 21 May 2025.