If your Dell PowerEdge R720xd reports Error 2000-0251 during the Pre-Boot System Assessment (ePSA), it indicates a problem with the RAID controller. The steps below will help you troubleshoot and resolve the issue safely and efficiently.
What Causes Error 2000-0251?
This error most commonly indicates one of the following:
- RAID controller failure or corrupted controller firmware (PERC or other controller).
- Loose, damaged, or improperly seated connections between the RAID controller and the drives or backplane.
- Occasionally, failing drives or backplane issues that present as a controller-related fault.
Preliminary Precautions
- Before performing firmware updates or hardware work, ensure you have a verified backup of any critical data.
- Record the server’s Service Tag and current hardware/firmware versions — Dell Support will typically request these.
- Observe anti-static precautions (use an ESD wrist strap or work on an anti-static surface) when handling internal components.
Step-by-Step Troubleshooting
1. Power Cycle and Inspect Connections
- Shut down the server and disconnect all power sources.
- Open the chassis and visually inspect the RAID controller, cables, and drive connections. Look for loose connectors, damaged cables, or bent pins.
- On hot-swap systems, ensure drive carriers are fully seated in the backplane; for non-hot-swap drives, verify SATA/SAS cables and power connectors are secure.
2. Reseat the RAID Controller
- With power removed, carefully remove the RAID controller card from its slot, check for debris or damage to the gold contacts, and then reinsert it firmly so it aligns properly.
- Reattach any retention brackets and reapply power to test whether the error persists.
3. Update Controller Firmware
Firmware corruption can trigger this error. To update safely:
- Download the latest RAID controller firmware for your PowerEdge R720xd from Dell’s support site (use your Service Tag to find the correct files): Dell Drivers & Downloads.
- Apply firmware updates via the Dell Lifecycle Controller, iDRAC, or a bootable ISO/USB update package. Ensure the server remains powered during the update and do not interrupt the process.
- After updating, reboot and re-run diagnostics.
4. Run Diagnostics Again
- Use the Pre-Boot System Assessment (ePSA) or the server’s diagnostics available through Lifecycle Controller/iDRAC to re-run the test and capture detailed error codes and logs.
- Document any additional error codes or messages; these details are helpful if you need to escalate to support.
5. Check Drives and Backplane
If the controller still flags the error, inspect the drive modules and backplane:
- Verify individual drive health using controller utilities (e.g., PERC BIOS/UEFI or iDRAC storage utilities).
- Swap in known-good drives or move drives to alternate bays (when safe and appropriate) to help isolate a failing drive or backplane connector.
6. Replace Hardware If Necessary
If reseating, updating firmware, and checking drives do not clear the error, the RAID controller is likely defective and will need replacement. Contact Dell Support to arrange a replacement or service visit. Have the server Service Tag and diagnostic logs ready to speed up troubleshooting and RMA processing.
When to Contact Dell Support
Contact Dell Support if:
- The error persists after you’ve reseated components and updated firmware.
- Diagnostics indicate hardware failure of the controller, backplane, or other components.
- You need assistance identifying the correct replacement part or arranging an RMA.
Useful resources: Dell’s main support portal for downloads and documentation is available here: Dell Support. For background on RAID controllers and typical behavior when they fail, see this overview: RAID controller (Wikipedia).
Final Thoughts
Error 2000-0251 on a PowerEdge R720xd most often points to a RAID controller or related connection problem. Systematically reseating components, verifying connections, updating firmware, and running diagnostics usually resolves the issue. If the fault persists, contact Dell Support with your Service Tag and diagnostic logs for further assistance or replacement options.
