Bracknell Data Recovery – Bracknell and London’s No.1 QNAP RAID recovery specialists. With over 25 years of experience in enterprise data recovery, we are experts in restoring inaccessible iSCSI LUNs from RAID 10 NAS systems, particularly QNAP arrays.
Whether your QNAP RAID 10 system has suffered logical corruption, LUN loss, or partial RAID failure, we have the tools and expertise to recover your data – securely and efficiently.
Common QNAP RAID Issues We Handle
- iSCSI LUNs not appearing in QTS interface
- RAID 10 volume degraded or failed
- iSCSI target structure corruption
- Unexpected NAS shutdown during write operation
- Corrupted QNAP metadata or LVM headers
- QNAP firmware upgrade leading to RAID rebuild errors
These faults often stem from improper RAID rebuilds, failing drives, or corrupted virtual block mappings. If iSCSI LUNs have disappeared, avoid attempting further rebuilds or firmware resets, as these may overwrite critical metadata.
Our Technical Recovery Process – Step by Step
Step 1: Drive-Level Imaging
Each of the 8 disks is write-blocked and imaged using forensic-grade hardware. This ensures an exact replica of each drive, preserving the original condition even if drives are partially damaged or intermittently failing.
If any drives have mechanical issues, we perform:
- Head stack replacements
- Firmware repair
- Platter calibration (for HDDs)
to retrieve data sectors into cleanroom imaging machines.
Step 2: RAID 10 Virtual Reconstruction
Once imaging is complete, we create a virtual clone of the original QNAP RAID 10 configuration using professional RAID emulation tools (e.g., UFS Explorer RAID Recovery, R-Studio Technician, or proprietary hex-level analyzers). We:
- Identify correct stripe size, order, and parity layout
- Analyse QNAP’s RAID metadata
- Emulate LVM2 volumes and rebuild QNAP-specific RAID headers
This step is essential for correctly reconstructing the hybrid RAID 1+0 structure used in QNAP NAS devices.
Step 3: iSCSI LUN Metadata Analysis
We scan the reconstructed volume for iSCSI header structures, partition maps, and QNAP LUN backup config (typically located within the system volume). If LUNs are stored as files within the volume, we recover the raw LUN containers (e.g., .img or .lun files).
If iSCSI targets were deleted or corrupted:
- We use metadata carving to locate lost LUNs by header signatures
- Rebuild corrupted QNAP QTD format and align to system blocks
- If the LUNs used VMFS, NTFS, EXT4, or XFS – we extract and rebuild the virtual disks inside the container
Step 4: Data Extraction and Verification
Once the LUNs are mounted or reconstructed, we:
- Recover VM files, databases, or other logical contents
- Run consistency checks on VMDK, SQL, or flat file systems
- Copy the final recovered data to a secure external medium
If your LUN contained virtualised systems (e.g., Hyper-V or VMware), we can provide bootable VM reconstructions or extracted files.
Supported Systems and Recovery Capabilities
- QNAP Models Supported: TVS-x82T, TS-873A, TS-431XeU, TS-h1683XU, TS-EC880U, and many more
- RAID Levels: RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, Hybrid RAID
- iSCSI Formats: QNAP QTD, VMFS, NTFS, EXT4, XFS
- Operating Systems: Windows Server, Linux (RHEL, Ubuntu, CentOS), macOS, ESXi, and Unix variants
Why Choose Bracknell Data Recovery?
- 25 Years’ Expertise in complex enterprise RAID recovery
- Specialists in iSCSI & Virtual Block Devices
- Cleanroom Facilities for Physical Repairs
- Support for All QNAP RAID Types including encrypted and firmware-failed units
- 48-Hour Critical Service available for urgent recovery cases
Book a Free Diagnostic Today
If your QNAP RAID 10 NAS has lost access to iSCSI LUNs or suffered a RAID failure, don’t risk data loss with continued use. Contact Bracknell Data Recovery today for a no-obligation diagnosis. We are your trusted partner for qnap raid 5 data recovery and RAID 10 recovery throughout Bracknell, London, and across the UK.