TN-R6-007 — Software Reconstruction vs Hardware Rebuild (RAID 6)
Author: ADR Data Recovery
0. Purpose and Scope
This note explains why RAID 6 recovery must begin with software reconstruction, not controller rebuilds.
1. Hardware Rebuild Characteristics
- Immediate writes
- Assumes parity correctness
- Irreversible changes
2. Software Reconstruction Advantages
- Read-only validation
- Deterministic P/Q mapping
- Reversible decision paths
3. ADR Recovery Principle
Reconstruction precedes rebuild. Rebuilds occur only after data is secured.