TN-R6-006 — Why Recreating RAID 6 Destroys Recoverability
Author: ADR Data Recovery
0. Purpose and Scope
This note explains why recreating RAID 6 overwrites recoverable data even with identical parameters.
1. Initialization Writes
- Controllers write fresh headers.
- Parity regions are initialized.
- Assumed-free areas are modified.
2. Why “Same Config” Is Not Safe
- Epochs reset
- Stripe mapping changes
- Legacy metadata overwritten
3. Only Viable Path
Full cloning followed by software reconstruction using the original layout.