Simple definition
One RAID dual parity usually tolerant of simultaneous failure of two discs.
Technical definition
One RAID The concept of dual parity generally tolerates the simultaneous failure of two discs. This concept concerns the organization, availability or access to data on storage media.
What is it used for?
Organize storage and improve availability, performance or resilience.
Practical example
Example: This concept can be taken into account when sizing or troubleshooting a storage.
Common issues
- Insufficient capacity
- Material pane
- Confusion between Red Data and Backup