Cardiff Data Recovery is Wales’s No.1 Synology data recovery specialist, trusted by businesses and individuals for over 25 years. We provide expert data recovery services for all models of Synology NAS RAID systems, including multi-disk arrays that have experienced critical failure, volume crashes, or file system corruption.
If your Synology NAS device is no longer accessible, shows a “Crashed Volume” status, or is reporting degraded or failed disks, our dedicated RAID engineers can help recover your data safely and securely — even when other providers cannot.
🔧 Synology NAS Systems We Support
We provide recovery services for all Synology models, including:
Top 20 Selling Synology External NAS RAID Models in the UK:
- Synology DS920+
- Synology DS423+
- Synology DS220+
- Synology DS1821+
- Synology DS1621+
- Synology DS1522+
- Synology DS723+
- Synology DS2422+
- Synology DS1019+
- Synology DS218play
- Synology DS718+
- Synology RS1221+
- Synology RS820RP+
- Synology DS1819+
- Synology DS214
- Synology DS120j
- Synology DS420j
- Synology DS220j
- Synology RS422+
- Synology DX517 Expansion Unit
We work with both desktop and rackmount Synology units using SHR, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 and JBOD configurations.
🛠️ Common Synology NAS Drive Failures We Recover From
We specialise in data recovery from a wide range of Synology failures. Here are the 30 most common Synology NAS RAID problems we successfully recover from:
- Crashed Volume / Volume Not Mounted
- RAID Degraded or Inconsistent State
- Multiple Disk Failures
- Failed RAID 5 or RAID 6 Rebuild
- SHR (Synology Hybrid RAID) Corruption
- Power Surge Causing Firmware Corruption
- Accidental Disk Reordering
- Disk Not Initialised
- Files/Folders Missing After Reboot
- Rebuild Aborted Midway
- Drive Not Recognised in DSM
- Metadata Corruption
- File System Corrupted (EXT4, BTRFS)
- Operating System Partition Damage
- RAID Configuration Deleted
- Volume Unavailable After Update
- Disk Detected as Foreign
- Volume Not Accessible in DSM
- Partition Table Corruption
- Bad Sectors on Multiple Disks
- Expansion Failure with DX517
- Encrypted Volume Unreadable
- Failed DSM Update Causing Volume Crash
- Background Parity Check Errors
- RAID 0 Stripe Broken
- DSM GUI Inaccessible
- System Partition Failed
- Synology Volume Showing as RAW
- Sudden Shutdown Mid-Transfer
- RAID Missing or Offline After Power Failure
🔍 How We Recover Synology Crashed Volumes – Step by Step
1. Disk Imaging & Clone Creation
- Each disk from the NAS is labelled and imaged sector-by-sector using read-only forensic tools.
- Drives with bad sectors are handled with multi-pass imaging and ECC error detection.
2. RAID Reconstruction
- We reverse-engineer the RAID configuration, including SHR and non-standard layouts.
- Parameters like stripe size, disk order, block rotation and parity distribution are analysed.
- A virtual RAID is created in a lab environment for safe data reconstruction.
3. Volume Repair & File System Recovery
- Damaged EXT4 or BTRFS file systems are analysed for superblock and inode issues.
- Volumes showing as “crashed” in DSM are manually mounted and corrected in a virtual Linux environment.
- Metadata and directory structures are repaired to allow normal file browsing and recovery.
4. Data Extraction & Validation
- Data is copied from the reconstructed RAID to secure recovery drives.
- Files are verified using checksum comparison and logical validation.
- We ensure recovered folders mirror the original structure, where possible.
💻 Supported Systems & File Formats
Operating systems supported:
- Windows (NTFS, exFAT)
- macOS (HFS+, APFS)
- Linux/Unix (EXT3, EXT4, XFS, BTRFS)
- Synology-specific volume management (LVM over MD/RAID)
Supported interfaces:
- SATA, SAS, eSATA, NVMe, PCIe, SCSI, PATA, U.2, M.2
✅ Why Choose Cardiff Data Recovery?
- Over 25 years of RAID and NAS recovery experience
- Dedicated team for Synology crashed volume recovery
- Full support for DSM-managed and encrypted volumes
- Safe, non-destructive recovery process using cloned drives
- Recovery from failed rebuilds, damaged volumes, and misconfigured disks
- Fully GDPR-compliant and ISO-class handling procedures
- Optional 48-hour emergency recovery service
- Free diagnostic evaluation and detailed recovery report
📞 Contact Cardiff Data Recovery Today
If your Synology volume has crashed, your NAS isn’t mounting, or you’ve experienced a RAID failure, don’t attempt a rebuild or reinitialise the volume — this could permanently damage the data.
Contact Cardiff Data Recovery today for a free diagnostic. We are your trusted specialists in synology crashed volume recovery, helping clients across the UK securely restore their data.