TeraStation RAID Terminology
The TeraStations do not use standard RAID terminology:
Term Meaning
Disk Scan Scans the array, ensuring the accuracy of all data. Some corrupt data (like from an unsafe shutdown) may be deleted.
Disk Restructuring Rebuilds the array on a single disk, using the raid data on the other disks. No data loss.
Rebuild Array Recreates an entirely new array, from scratch. Total data loss.