For over 25 years, Coventry Data Recovery has specialised in the recovery of complex NAS RAID systems, including power-damaged multi-disk arrays. If your Synology NAS (RAID 5, 4-disk setup) has failed following a power surge—resulting in unresponsive drives or a non-booting RAID array—we have the tools, knowledge, and cleanroom facilities to restore your critical business or personal data.
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Common Fault: Electrical Damage to RAID Disks after Power Surge
Sudden power loss or surge can cause:
- Burned or shorted PCBs on individual NAS drives
- RAID controller logic corruption
- Loss of drive synchronisation in RAID array
- Firmware lockups or unreadable SMART status
- Boot sector corruption across the array
These failures prevent the Synology NAS from mounting the volume or may falsely report multiple disk failures, which RAID 5 cannot tolerate beyond one.
How We Recover Data from Power-Damaged Synology RAID 5 Systems
Step 1: Drive Isolation and Inspection
- Each disk is removed from the Synology NAS unit and evaluated independently in our ESD-safe lab.
- PCBs are inspected for burn marks, capacitor failure, and MOSFET shorting.
- We verify motor function and platter spin-up status to rule out secondary internal mechanical damage.
Step 2: PCB Replacement or Repair
- If the PCB is irreparable, we source an exact firmware-matched donor PCB.
- Unique ROM/NVRAM configuration from the original PCB is transferred via hot-air rework and soldering tools.
- Where applicable (e.g. Seagate or Western Digital), we use proprietary firmware repair tools to restore drive access.
Step 3: Disk Imaging
- Once each drive is stabilised electrically, a forensic disk image is created using write-blocked recovery hardware (PC-3000 or DeepSpar).
- Sector-by-sector imaging ensures original data remains unmodified.
- Bad sectors are logged and bypassed with read retries and head-skip mapping.
Step 4: RAID 5 Reconstruction
- After all disks are imaged, we reconstruct the RAID 5 layout using:
- Stripe size identification
- Disk order detection
- Parity algorithm validation
- We simulate the Synology RAID volume in a controlled environment to rebuild the file system structure (e.g., ext4, btrfs, SHR).
Step 5: Logical Data Repair & Extraction
- If the file system is corrupted (common in abrupt failures), we rebuild:
- Volume headers
- RAID metadata
- Damaged inode tables
- The data is extracted in original folders and filenames and verified for integrity.
Supported Systems and Configurations
✅ Synology Models Supported
- DS920+, DS218+, DS418, DS720+, DS1522+, DS1821+, RS1221RP+, and others
✅ File Systems Supported
- EXT4, Btrfs, FAT32 (external shares), iSCSI LUNs
✅ Interfaces Supported
- SATA, eSATA, SAS, M.2 NVMe (for cache drives)
Why Choose Coventry Data Recovery for Synology RAID Recovery?
- 🔧 25+ Years of RAID & NAS Expertise
- 🧪 Full In-House Cleanroom & PCB Rework Labs
- 🔐 Safe & Forensic Sector-Level Imaging
- 🔄 Support for Failed RAID Members & Non-Bootable Systems
- 💼 Business-Critical Recovery Services (48hr Options Available)
- 🧾 Free Diagnostics and Transparent Reporting (No Data = No Recovery Fee)
Request Your Free NAS Diagnostics Today
If your Synology RAID 5 NAS has failed due to a power surge or electrical fault, do not power up the system repeatedly, as this can cause permanent data loss. Let our RAID recovery engineers assess the damage and begin the recovery process safely and efficiently.
📞 Contact Coventry Data Recovery today to begin your Synology NAS data recovery with confidence.