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  • RAID Triage Center
    • RAID 5 Triage
      • Virtual Disk Not Detected After Power Loss
      • Why Is My Rebuild Stuck at 0%?
      • RAID 5, Two Drives Failed — Is It Game Over?
      • One Drive Foreign, One Missing — What Now?
      • RAID 5 Virtual Disk Not Detected After Reboot
      • Rebuild Started — Now RAID Is Gone?
      • RAID 5 Offline, One Drive Failed — What Now?
    • RAID 6 Triage
      • Rebuild Won’t Start After Second Drive Swap
      • Recreated RAID 6 — But Files Are Missing or Corrupt
      • RAID 6 Rebuild Stuck — No Progress, No Errors
      • Rebuild Started — Now Virtual Disk Is Missing
      • RAID 6 Virtual Disk Not Detected After Power Loss
      • RAID 6: Two Drives Failed — Now What?
      • RAID 6: One Drive Failed — Should I Be Worried?
    • RAID 10 Triage
      • RAID 10 Failed — One Pair Missing
      • RAID 10 Rebuild Started — Then Crashed
      • RAID 10 Shows All Disks OK — But No Volume
      • RAID 10 Import Config Failed
      • RAID 10 Controller Says Healthy — But OS Won’t Boot
      • RAID 10 Mirror Shows Mismatch — What Now?
      • RAID 10 Offline After Sudden Power Loss
    • RAID 50 Triage
      • RAID 50 Offline But All Drives Look Healthy
      • RAID 50 Failed – One Stripe Group Missing
      • RAID 50 Foreign Config Detected on One Group
      • RAID 50 Rebuild Stuck at 0% — Now What?
      • RAID 50 Online But Files Corrupted After Rebuild
    • RAID 60 Triage
      • RAID 60 Failed — Group-Level Inconsistency
      • RAID 60 Corruption After Drive Swap — Now Unreadable
      • RAID 60 Rebuild Stuck at 0%, 5%, or 10% — What This Really Means
      • RAID 60 Dropped Offline — All Drives Healthy
      • RAID 60 Won’t Mount — Virtual Disk Missing (All Drives Healthy)
      • RAID 60 Virtual Disk Missing — Or Wrong Size After Restart
      • RAID 60 Both Groups Degraded — No Array Found
      • RAID 60 Corruption After Drive Replacement
      • RAID 60 Degraded After Power Loss
    • Technical Note TN-R50-001
    • Technical Note TN-R60-001
    • Technical Note TN-C1-001
    • RAID 5 Technical Notes
      • ADR Technical Note TN-R5-001
      • TN-R5-002 — Parity Confidence vs. Hardware Health
      • TN-R5-003 — Latent Sector Errors and Why Rebuilds Surface Them
      • TN-R5-004 — Why Parity Checks Become Destructive in Degraded RAID 5
      • TN-R5-005 — Drive Order Ambiguity and Stripe Misalignment
      • TN-R5-006 — Why Rebuild Retries Compound Damage
      • TN-R5-007 — Controller Automation as a Failure Accelerator
      • TN-R5-008 — Software Reconstruction vs. Hardware Rebuild
    • RAID 6 Technical Notes
      • ADR RAID 6 Technical Notes Index
      • ADR Technical Notes TN-R6-001
      • TN-R6-002 — Parity Confidence Collapse in Dual-Parity Arrays
      • TN-R6-003 — Latent Sector Errors Under Dual-Parity Stress
      • TN-R6-004 — Metadata Epoch Drift and Identity Loss
      • TN-R6-005 — Why Rebuild Retries Are Especially Dangerous in RAID 6
      • TN-R6-006 — Why Recreating RAID 6 Destroys Recoverability
      • TN-R6-007 — Software Reconstruction vs Hardware Rebuild (RAID 6)
    • ADR Data Recovery Technical Notes Index
  • Controller & System Triage
    • Dell PERC: Foreign Config Detected After Reboot
    • TrueNAS: Volume Won’t Mount After Drive Replaced
    • QNAP: Disk Missing After Firmware Update — What It Really Means
    • Synology: RAID Group Degraded — But No Drive Failed
    • Rebuild Won’t Start — All Drives Healthy
    • NAS Shows Healthy Disks — But Shared Folders Are Empty
    • HP Smart Array: RAID Controller Shows Drives — But No Logical Volume
    • Synology NAS Says Healthy — But No Data Shows
    • HPE Smart Array: Virtual Drive Missing After Power Loss
    • TrueNAS SCALE: Pool Won’t Mount After Drive Replacement
    • FreeNAS: Pool Won’t Mount After Drive Replacement

RAID 6 Technical Notes » ADR Data Recovery RAID 6 Technical Notes Index

  • TN-R6-001 — RAID 6 Failure Behaviors, Rebuild Stalls, and Metadata Desynchronization
  • TN-R6-002 — Parity Confidence Collapse in Dual-Parity Arrays
  • TN-R6-003 — Latent Sector Errors Under Dual-Parity Stress
  • TN-R6-004 — Metadata Epoch Drift and Identity Loss
  • TN-R6-005 — Why Rebuild Retries Are Especially Dangerous in RAID 6
  • TN-R6-006 — Why Recreating RAID 6 Destroys Recoverability
  • TN-R6-007 — Software Reconstruction vs. Hardware Rebuild (RAID 6)

2026-01-13

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