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Phone: +86 16626708626Description
Key Technical Specifications
- Model: MVME-327A
- Brand: Motorola
- Platform: VMEbus
- Board Type: SCSI Bus Adapter
- Function: SCSI controller
- Application: Storage interface for VME single-board computers
- Compatibility: Motorola MVME VME racks
- Use Case: Connects SCSI drives/disks to MVME systems
- Availability: Obsolete, limited stock
- Condition: Often sold as refurbished (mint condition) or surplus
- Notes: Listed among older generation MVME CPU/board family
Product Introduction
Motorola MVME-327A is a VMEbus SCSI bus adapter used to interface SCSI storage devices with Motorola MVME single-board computers. It plugs into standard VME racks and provides the SCSI controller function needed for disk drives in legacy industrial and embedded systems.
This board is typically sourced for exact replacement when an existing MVME system loses storage connectivity. Buyers choose it when migrating away from the platform is not feasible and the original SCSI interface must be preserved.
- MVME-327A
- MVME-327A
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| SCSI device not detected | Cable fault, termination issue, or board failure | ✅ High | Check SCSI cable, verify termination, inspect connectors | Rule out cables and terminators first |
| System hangs on SCSI boot | Shorted device, bad terminator, or controller fault | ✅ High | Disconnect all SCSI devices, test with known-good drive | Isolate faulty device before replacing board |
| Intermittent SCSI errors | Marginal controller, cabling issues, or noise | ✅ High | Swap cables, check shielding, run extended I/O test | Replace if errors follow the board |
| No SCSI activity after install | Bad seating or slot mismatch | ✅ Medium | Reseat board, verify slot assignment | Check physical installation first |
| SCSI bus timeout errors | Wrong ID/conflict or termination mismatch | ✅ High | Verify SCSI IDs and termination settings | Correct configuration before replacing |
Contact technical support with photos of the board, cabling, terminator setup, and system logs if the fault is unclear.
Frequently Asked Questions
Q: Is this a direct replacement for all SCSI controllers in MVME racks?A: No. It only works as a direct replacement when the host SBC and SCSI configuration match the original setup.
Q: Can I hot-swap this board?A: No. Power down the system first. Live insertion can damage the board and backplane.
Q: Do I need to reconfigure SCSI IDs or termination?A: Yes. The board itself doesn’t set these; the system-wide SCSI bus needs correct IDs and proper termination. Verify these before powering up.
Q: Why is this sold as refurbished?A: MVME-327A is obsolete. Most available stock comes from tested, refurbished inventory or surplus.
Q: How do I confirm compatibility before ordering?A: Match the model number, verify your SBC supports this SCSI adapter, and confirm the SCSI bus configuration matches your system.
Q: Why is the price lower than new factory hardware?A: Factory-new production is not available for this class of Motorola hardware. Pricing reflects refurbished/surplus supply and test status.
Q: What should I inspect before installing it?A: Check connectors for bent pins, verify the board is clean and free of corrosion, and confirm SCSI cabling and termination before powering up.
