Pro Data uses a combination of redundancy, parity, checksums, and error correction to protect your most important digital assets. Data is distributed across all twelve SSDs as it is written, along with its associated metadata, to ensure your assets remain intact after unexpected SSD failure or when SSDs reach end of service life.
Using RAID-6 Protected containers, your data is resilient and accessible with up to two SSD failures. Once a failed SSD is replaced, Pro Data automatically incorporates the new SSD to recover and restore maximum RAID parity to your storage. While your interaction isn't required to start this process, there may be times when you want to validate and/or repair the integrity of your data:
- A physical event such as water intrusion may have caused damage to components
- Pro Data hasn't been powered on for an extended period of time, and contains an important backup copy of data that must be validated before data is restored from the backup
- A connected computer crashed, and upon restart, filesystem recovery for a container has failed, and the filesystem is now unavailable
In these instances, Data Scrub prompts Pro Data to methodically walk through each block of the storage device, verifying that all data, parity, and checksums are consistent. If any inconsistencies are found during the scrub, parity is used to automatically heal damaged blocks.
To run a Data Scrub on your device, follow these steps:
- Launch iodyne Utility from your Applications folder or the menu bar icon
- Locate the device in the utility's Devices menu and select Data Scrub… from the submenu
- Confirm you want to initiate a device-wide Data Scrub when prompted
- Monitor Data Scrub progress from the Status tab of the main utility window
During this process, if Pro Data detects a latent error, it will use the appropriate parity to heal the affected block. Once Data Scrub is complete, you may continue with backup, restore, or filesystem recovery.