Home > Data Protection > PowerProtect DD Series Appliances > PowerProtect DD Data Invulnerability Architecture: Enhancing Data Integrity and Recoverability > Scrubbing to ensure ongoing data integrity
“On-the-fly” error detection works well for data that is being read, but it does not address issues with data that might be unread for weeks or months before it is needed for a recovery. For this reason, PowerProtect DD systems actively reverify the integrity of all data through an ongoing background process. This scrubbing process intelligently finds and repairs defects on the disk before they can become a problem. Through the combination of RAID 6, “on-the-fly” error detection and correction for data being read, and ongoing data scrubbing, most computing-system and disk-drive-generated faults can be isolated and overcome with no data risk or impact on system operation.