Coventry Data Recovery – No.1 RAID 5 File Recovery Specialists

Expert Netgear ReadyNAS RAID 5 Data Recovery | 25 Years of Trusted Service

At Coventry Data Recovery, we specialise in the advanced recovery of RAID 5 systems affected by sudden power loss, controller failure, and metadata corruption. If your Netgear ReadyNAS RAID 5 system won’t boot after a power outage, your array may have sustained metadata damage, rendering it inaccessible or misaligned. Our expert engineers are equipped to restore critical business and personal data from 4-disk RAID 5 systems with precision and confidentiality.

RAID 5 Failure After Power Loss – Common Symptom

A sudden power outage can lead to:

  • Incomplete writes during striping
  • Metadata corruption on one or more drives
  • RAID controller failure or configuration loss
  • System stuck in degraded or unbootable state

These conditions often leave your NAS inaccessible, with the volume no longer mounting or reporting missing disks, even though physical drives appear healthy.

Technical Step-by-Step Recovery Process

Step 1: Secure Disk Imaging

Each of the four drives is:

  • Removed from the NAS and write-blocked
  • Imaged sector-by-sector using forensic-grade tools such as PC-3000, DeepSpar, or DDI
  • Unreadable or degraded sectors are handled using ECC read passes and adaptive head maps where applicable

This ensures no further damage is caused by working on the original media.

Step 2: RAID Configuration Analysis

With all disk images secured:

  • RAID parameters such as stripe size, disk order, parity rotation, and offsets are reverse-engineered if not preserved in metadata
  • A virtual RAID reconstruction is created using tools like R-Studio Technician or UFS Explorer RAID Edition
  • If metadata corruption occurred, multiple reconstruction permutations are tested to validate file system integrity

Step 3: File System Repair

Once the RAID array is logically rebuilt:

  • File system integrity is checked (e.g. EXT4, Btrfs, XFS — common on Netgear systems)
  • Damaged superblocks or journal entries are rebuilt
  • Missing directories, orphaned inodes, or fragmented files are recovered or repaired

Step 4: Data Extraction & Validation

Recovered data is:

  • Exported to a clean backup destination (e.g. encrypted external HDD)
  • Validated for readability, structure, and logical accuracy
  • Checked for integrity using checksum comparison or user verification of key file types

Supported Netgear ReadyNAS Devices

We support all 4-disk ReadyNAS RAID 5 platforms including:

  • ReadyNAS RN314
  • ReadyNAS Ultra 4 Plus
  • ReadyNAS NVX
  • ReadyNAS 424
  • ReadyNAS 214
  • ReadyNAS Pro 4

Supported Operating and File Systems

  • Operating Systems: Linux (NAS OS), Unix variants
  • File Systems: EXT3, EXT4, Btrfs, XFS
  • Interfaces: SATA, eSATA, USB 3.0, Gigabit LAN (data recovered from raw disks)

Why Choose Coventry Data Recovery?

✅ Over 25 years of RAID recovery experience
✅ Cleanroom environment for handling drives with mechanical faults
✅ Expertise in metadata recovery and virtual RAID rebuilds
✅ No fix – no fee policy
✅ Transparent diagnostics and secure handling of sensitive data

Book Your Free Diagnostic Today

If your Netgear ReadyNAS RAID 5 system will not boot following a power failure, do not reinitialise the unit or attempt a rebuild. This can permanently overwrite remaining good data.

Contact Coventry Data Recovery today for a free RAID 5 diagnostic. We’ll restore your data safely and efficiently with minimal downtime.