# PFES-HW-DH40N-001 — HP DH40N Controller Identification

**Status:** Open, unverified  
**Risk level:** Non-destructive identification first

An HP DH40N DVD-ROM is installed in the Project Frankenstein server. The drive
may use a Panasonic MN103/MN103S-family controller or a closely related
proprietary Renesas-family controller, but neither architecture is established.
The model name alone is not architecture evidence.

## Identification sequence

1. Capture exact standard identity and transport information using Linux sysfs,
   INQUIRY, `lsscsi`, `udevadm`, and read-only ATA/SCSI identification tools.
2. Record vendor, product, firmware revision, device path, bus topology, and
   kernel driver without issuing vendor-specific or write commands.
3. Locate and preserve matching firmware updater packages, if available, without
   running them against the server drive.
4. Extract firmware payloads offline and test architecture hypotheses using
   reset-vector structure, opcode-density, strings, known controller-family
   signatures, and disassembly behavior.
5. If firmware evidence is inconclusive, inspect the controller board and chip
   markings only after a safe server shutdown.
6. Remove the drive from server service for Project Frankenstein testing only if
   MN103S-family hardware is confirmed or other evidence makes removal worthwhile.

## Safety rules

- No flashing while installed in the server.
- No experimental vendor commands during identification.
- Do not classify the drive as MN103S from product listings or model similarity.
- Preserve all negative architecture evidence.
