With 25 years of data recovery expertise, Coventry Data Recovery is the leading authority in advanced RAID recovery. If your Synology NAS (8-disk RAID 0) has failed following an attempted partition expansion or shrink, your data may now be fragmented, misaligned, or entirely inaccessible.

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⚠️ Issue: Partition Expansion or Shrinking Failure in RAID 0

Expanding or shrinking volumes on a RAID 0 array carries significant risk. Unlike RAID 5 or SHR, RAID 0 offers no redundancy—any corruption in the volume structure can render the entire dataset unreadable.

Typical results of failed partition expansion/shrink:

Volume no longer mounts
DSM shows “No Volume Found” or “Uninitialised”
Partial or corrupted folder structures
Disk group is visible, but data cannot be accessed
Inconsistent or mismatched partition offsets across disks

🔧 How We Recover Data from Synology RAID 0 Partition Failures

Step 1: Detailed Disk-Level Forensic Imaging

We begin by individually removing each of the 8 disks from the NAS chassis.
Each disk is imaged in read-only mode using industry-standard hardware tools (PC-3000 or DeepSpar).
If a disk has surface damage or bad sectors, we employ adaptive head mapping and retries to obtain the most complete clone possible.
Sector images are securely stored and used for virtual reconstruction—no risk to the original drives.

Step 2: RAID 0 Parameter Identification

Because RAID 0 has no metadata to indicate configuration, we perform deep analysis to identify:

Stripe size (commonly 64KB, 128KB or 256KB)
Drive order within the array
Start sector offsets
Partition boundary calculations
We use entropy analysis and data signature correlation to determine the correct sequencing and layout.

Step 3: Virtual RAID Reconstruction

Using the recovered parameters, we virtually reassemble the RAID 0 array from the disk images.
A full virtual reconstruction allows us to replicate the original structure without modifying the physical media.
This emulated RAID 0 setup is then used to analyse the file system (typically Btrfs or EXT4 on Synology devices).

Step 4: Partition Structure Rebuild

Failed expansion/shrink operations often result in:

Misaligned partition tables
Corrupted GPT or MBR entries
Overwritten volume headers

We manually reconstruct these partition structures using:

Hex-level offset inspection
Cross-disk metadata signature analysis
Volume header repair (specific to Synology partitioning schemes)
This restores logical access to data stored before the failed expansion.

Step 5: File System Recovery and Extraction

Once the file system is accessible, we perform a detailed scan for:

Lost or orphaned files
Partial folder structures
Metadata inconsistencies
Using forensic tools (UFS Explorer, R-Studio, X-Ways), we recover intact files and rebuild directory trees as completely as possible.

✅ Supported Systems and Configurations

Synology NAS Models:

RS1221+, DS2419+, DS1821+, DS1817+, FS1018, and all 8-bay RackStation or DiskStation models

File Systems:

Btrfs, EXT4, FAT32 (external mounts)

RAID Types:

RAID 0 only (No redundancy — any corruption affects all data)

Interfaces:

SATA, SAS (for enterprise drives), SSD caches (M.2 NVMe), USB expansion volumes

🛠 Why Choose Coventry Data Recovery?

🧠 25+ years’ RAID and NAS recovery expertise
🔬 Full in-house cleanroom and RAID lab
⚙️ Precise stripe reconstruction & disk sequencing
🧾 No data – no fee model for standard recoveries
🔐 Forensic-grade sector imaging and integrity verification

📩 Start Your NAS Recovery Now

If you’ve experienced a failed partition expansion or shrink on your Synology NAS RAID 0 array, do not reinitialise or rebuild the volume. This can permanently overwrite remaining recoverable data. Contact our expert team at Coventry Data Recovery for a comprehensive diagnosis and tailored recovery plan.

📞 Call today or email us to arrange your free RAID diagnostics and begin the Synology NAS data recovery process with confidence.

Coventry Data Recovery – Synology NAS RAID 0 Recovery Specialists