Synology NAS was reporting I/O error occurred on a drive overnight and it automatically removed it from the storage pool. I ran a manual SMART test and it failed (Ironwolf 4TB) I've never had a drive fail within warranty period so not sure what my rights are etc.
Drive still works but I know it needs to be replaced. Is a SMART test fail enough evidence for me to request retailer to replace the drive? It is 3 months old with 1800 hours run time.