NAS or RAID Storage Array: file-system corruption. Directory and allocation records no longer agree after interruption or media errors.

The distinguishing clue

The volume asks to be formatted, mounts read-only or loses folders.

Checks before an assessment

Record the storage system's alerts and which bays contain which drives. Do not initialise disks, change their order or begin a rebuild before assessing the array and backup state.

Stop point: Changing drive order or initialising disks can destroy recoverable array metadata.

Workshop confirmation and repair

Device-level check: Record drive order and array state, inspect each disk and preserve configuration before replacing anything.

Targeted check: Image important data first and inspect the file system without writing to it. If confirmed: Repair from a copy or recover files before recreating the volume.

Repair boundary: Replace only the confirmed failed member and follow the correct rebuild or recovery process for that array.

Related cause to rule out

When health warnings, read retries or increasing bad blocks appear, also consider NAS or RAID Storage Array: worn storage media before choosing a repair.

Checks after the work

After repair or replacement, check share access, redundancy state, alerts, restart and backup verification.

For an AEPC repair assessment in East Auckland, provide the exact model and observed clue. Call 027 908 8880 before visiting the Burswood workshop.