Disk sanitization is a process of physically obliterating data by means of overwrite patterns on filer or NearStore appliance disks in a manner that precludes recovery of that data by any known recovery methods.
The disk sanitization feature requires a license. Once installed, disk sanitization is enabled, as well as limited SnapMirror replication abilities that facilitate selective sanitization operations.
Caution: Once installed on a NetApp appliance, the license for disk sanitization is permanent.