# SD evaluator run 06670 — Industrial reference

Status: FAIL — evaluator infrastructure; card disposition remains untested
Type: evidence
Updated: 2026-07-14
Next Action: resolved by corrected-candidate run 07949; retain this infrastructure-failure record
Campaign Reason: Historical record from campaign 009-complete-clean-contract-bound-a-b-qualification; retained independently after campaign closure and requires no separate owner-queue execution.
Campaign: standalone
Parent: work/wp/active/wp-sd-card-accelerated-endurance-evaluator-and-media-qualification.md

## Identity

- Setup: provisional Setup A, J-Link serial `69664082`.
- Card: SanDisk Industrial 8 GB microSDHC U1/Class 10, known-working reference.
- Firmware: Release SREC SHA-256
  `ADE296F71313D3D3DADCBDBB94AFD9A80988484B3AFA7EE0E1398B52A26276DE`.
- Run ID: 6670 (`06670` namespace).
- Operator confirmed the service-code 472 permanent-data-loss warning.

## Result

- Final state: `FAILED`.
- Records targeted: 44,640.
- Records written before checkpoint: 1,440 (one simulated day).
- Mirror records verified: 2,880 (all A+B records at checkpoint).
- Files verified: 48 (24 hourly files per mirror).
- First failure sequence: 1,440.
- First/last status: `0x91`, FileX `FX_NOT_ENOUGH_MEMORY`.
- Media-check error bits: 0.
- Maximum A+B record transaction: 12 ThreadX ticks.
- Start tick: 181,857; end tick: 185,799.
- Start free bytes: 1,905,982,976.
- System remained booted; main control continued running.

## Disposition

This is not an Industrial-card reliability failure. All written records and
both mirrors passed byte comparison. `fx_media_check()` rejected the fixed
512-byte scratch buffer before scanning the FAT because FileX requires header
storage plus one logical-FAT bit per cluster. The evaluator correctly latched
and stopped, but the test infrastructure was undersized.

Corrective action: use capacity-appropriate FAT cluster geometry and a dedicated
512 KiB SDRAM media-check buffer. Repeat from a newly confirmed destructive run;
do not count run 06670 as an Industrial reference pass or media failure.

Resolution: corrected-candidate run 07949 completed the full profile with zero
media-check errors. See `work/evidence/setup-a/sd-evaluator/07949/manifest.md`.
