WeRecoverData

Data Recovery of 1.87TB Database Files from a Multi-Drive Dell RAID Failure in Southfield, Michigan

Data recovery became critical for a small business in Southfield, Michigan, when their Dell RAID 50 storage system suddenly failed. The array used six 2TB Seagate ST2000NM0033 hard drives and stored 1.87TB of vital company data, including SQL databases, QuickBooks files, PST email data, and financial records.

When the RAID array went offline, daily operations stopped. As a result, the company contacted WeRecoverData for immediate assistance.

Multiple Drive Errors Cause Array Collapse

The server used two separate arrays. An SSD RAID 1 handled the operating system and continued to run normally. However, the RAID 50 array stored all business data, and that is where the failure occurred.

During normal operation, the RAID controller reported that Drive 5 had failed. At the same time, Drives 2 and 7 suddenly showed as missing, even though they remained physically installed and powered on.

At first, the business attempted several troubleshooting steps. They reseated the drives, reinstalled the RAID controller, and even tried rebuilding the array using a replacement drive. However, the rebuild process failed. When they reinstalled the original drive, the system still could not restore the array.

Because multiple drives showed errors, the RAID structure collapsed completely. As a result, the company lost access to all stored data.

Why RAID 50 Can Still Fail

RAID 50 provides both striping and parity protection. However, it cannot survive certain combinations of drive failures.

In this case, Drive 5 had fully failed. Meanwhile, Drives 2 and 7 developed firmware and communication issues. Although those two drives were not completely dead, the RAID controller could not read them properly. Consequently, the controller lost track of the array’s layout and configuration.

Once that happened, the system could no longer assemble the data blocks correctly.

Forensic Cloning of All Six Drives

When the RAID system arrived at the WeRecoverData lab, our engineers immediately began the recovery process.

First, they stabilized all six hard drives. Then, they created full sector-by-sector forensic clones of each drive. This step included the failed drive as well as the two drives marked as missing.

By cloning the drives first, the team preserved the original media and prevented further degradation during analysis.

Firmware Stabilization and Drive Repair

Advanced diagnostics showed that Drives 2 and 7 did not suffer physical platter damage. Instead, they experienced firmware corruption and communication errors.

Using specialized stabilization tools, our engineers repaired the firmware modules and restored stable access to readable sectors. As a result, they extracted usable data from those drives safely.

With clean forensic images from all six drives, the team moved to the reconstruction phase.

Virtual RAID 50 Rebuild

Next, WeRecoverData RAID specialists rebuilt the RAID 50 array in a controlled virtual environment.

They analyzed metadata and data patterns to determine:

  • The correct drive order

  • Stripe size

  • Parity rotation

  • Original RAID configuration

After identifying the proper parameters, they recreated the full RAID 50 structure virtually. Then, they rebuilt the NTFS file system.

Once the virtual array functioned correctly, the stored data became accessible again.

Business Data Fully Restored

From the reconstructed system, our engineers extracted the company’s critical files. These included:

  • SQL databases

  • QuickBooks company files

  • PST email archives

  • Financial documents

They carefully verified each dataset to ensure integrity and usability.

After extensive work, WeRecoverData successfully recovered the entire 1.87TB of business data.

We securely transferred the recovered files to a new external storage device, allowing the company to restore operations without data loss.

A Complete Recovery After a Critical RAID Failure

For the business in Southfield, Michigan, this recovery prevented major downtime, financial damage, and operational disruption. What first appeared to be a catastrophic RAID collapse ended in a full restoration.

This case proves that even complex RAID 50 failures involving multiple drives can be resolved with the right expertise and tools—especially when rebuild attempts fail.

WeRecoverData specializes in advanced RAID data recovery for businesses facing critical storage failures.

More Data Recovery Stories

  • Data Recovery of 283 GB Photos from Locked Seagate Hard Drive in Toronto, Ontario

    Data recovery became critical for a customer in Toronto, Ontario, after a 500 GB Seagate ST35006412AS hard drive suddenly locked up during a file transfer. The customer was moving personal photos from an older computer to a new system when the drive stopped responding. With access completely blocked, they contacted WeRecoverData for professional assistance. Photo [...]