Frequently Asked Question
My ASUSTOR RAID volume is degraded. Can I replace the failed drive and rebuild?
QUICK ANSWER
First confirm the RAID level, failed bay and remaining drive health. A degraded fault-tolerant array may be rebuildable; RAID 0 or multiple failures may require a different recovery plan.
Applies to: ASUSTOR ADM Storage Manager and supported RAID configurations. Hot-swap support depends on the NAS model.
Work through these checks
- Open Storage Manager and record the volume status, RAID type and exact failed drive/bay. Back up important readable data before recovery work.
- Check the remaining members for errors. If several drives have failed, the volume is inaccessible or the failed bay is uncertain, stop and seek assessment.
- Choose a compatible replacement with sufficient usable capacity. Confirm whether the exact NAS supports hot swapping; do not assume every ASUSTOR model does.
- Replace only the identified failed member following the model and ADM procedure. Monitor rebuilding in Storage Manager and avoid unnecessary heavy workloads until it finishes.
Confirm the result
The volume should return to a healthy state and files should remain readable. Confirm the independent backup after rebuilding; RAID is not a backup.
Before going further: Do not initialise a new volume, remove several drives together or rearrange the remaining members to clear a warning.
If you need help
Include these details in your ticket: NAS/ADM, RAID type, bay-status screenshot, drive model list and recent event log.
Updated 261107