Recovering Data After RAID Array Format on NAS QNAP Turbo Station TS-864eU: Recovery Guide

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS QNAP Turbo Station TS-864eU
• How to Remove Hard Disks from Your NAS and Connect Them to a PC
  • Step-by-Step Data Recovery with Hetman RAID Recovery
  • How to Safely Recover Data from Disk Images
  • Where Are the User’s Files Actually Stored?
  • RAID Recovery Software: Detailed Comparison

Why Regular Data Recovery Tools Can’t Restore Files from RAID

Conventional hard drives store user data by writing it sequentially across the disk surface, which means an entire file is typically located on a single drive. In contrast, when data is written to a RAID array, each file is split into multiple fragments. These fragments are then distributed and written in sequence across all the drives in the array. Depending on the configuration, fragment sizes can range from 2 KB to 2 MB, so every file is physically stored across several disks at once.

This approach significantly increases read and write performance — after all, writing two halves of a 1 GB file to two drives simultaneously is much faster than writing the full 1 GB to a single disk. However, this same mechanism makes file recovery far more complex.

Different RAID levels use different methods to distribute and protect data. On top of that, manufacturers like QNAP often add their own proprietary structures and variations. As a result, data can be written to disks in many different formats, and each requires a specific approach during recovery.

Are there any specific factors to consider when choosing a NAS QNAP Turbo Station TS-864eU device to minimize data loss risks?

Yes, there are several factors to consider when choosing a NAS QNAP Turbo Station TS-864eU device to minimize data loss risks:

1. Redundant Storage: Look for a NAS device that supports RAID (Redundant Array of Independent Disks) configurations. RAID provides data redundancy by distributing data across multiple drives, ensuring that even if one drive fails, your data remains intact.
2. Backup and Recovery: Check if the NAS device supports regular backups to external storage devices or cloud services. Having a backup strategy in place ensures that your data is protected in case of hardware failure or accidental deletion.
3. Power Supply and UPS Support: A reliable power supply is crucial for preventing data loss due to sudden power outages. Look for a NAS device with a redundant power supply or one that supports an uninterruptible power supply (UPS) to provide backup power during outages.
4. Data Scrubbing and Self-Healing: Some NAS devices offer features like data scrubbing and self-healing, which regularly check the integrity of stored data and repair any errors or inconsistencies. These features help prevent data loss by identifying and fixing potential issues before they become critical.
5. Network Connectivity: Ensure that the NAS device has multiple network interfaces or supports link aggregation to provide network redundancy and improve performance. This helps to minimize the risk of data loss due to network failures.
6. Security Features: Look for NAS devices that offer robust security features such as data encryption, access control, and antivirus protection. These features help protect your data from unauthorized access, malware, and other security threats.
7. Scalability and Expansion Options: Consider your future storage needs and check if the NAS device supports expansion through additional drive bays or external storage devices. This allows you to easily increase storage capacity without the risk of data loss during the upgrade process.
8. Firmware Updates and Support: Regular firmware updates are essential to address security vulnerabilities and improve the overall performance and stability of the NAS device. Ensure that the manufacturer provides timely firmware updates and offers good customer support.

By considering these factors, you can choose a NAS QNAP Turbo Station TS-864eU device that provides the necessary features and safeguards to minimize the risks of data loss.

How to Remove Hard Disks from Your NAS and Connect Them to a PC

Although the NAS Turbo Station TS-864eU can be accessed over the network, you still need to remove its hard disks and connect them directly to a Windows PC. Only then can the recovery software properly scan and analyze the drives. Follow these steps:

1. Power off the NAS and disconnect it from the power source.

   WARNING! Before removing any drives, carefully read the device manual. Improper actions may damage both the NAS enclosure and the hard disks in the RAID array.

2. Remove the hard disks one by one, gently sliding each drive out of its slot. Remember that hard disks are highly sensitive: any impact or drop can cause serious physical damage.

3. Label each hard disk according to its position inside the NAS. The order of the drives is crucial for correct RAID reconstruction.

4. Connect the drives to your computer. In this video, we explain which ports you can use to connect hard disks and what to do if your PC does not have enough free connectors.

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   How to Order Remote Data Recovery

Step-by-Step Data Recovery with Hetman RAID Recovery

This program restores data from damaged RAID arrays and is fully compatible with QNAP Turbo Station TS-864eU. Each hard disk in the array contains technical metadata describing how files were written. When launched, Hetman RAID Recovery analyzes this metadata, automatically reconstructs the damaged array, and provides access to its contents. After that, you can browse the recovered disk and save your files. The program can also restore files that were accidentally deleted from the network drive.

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How to recover data from a QNAP

Turbo Station TS-864eU has 8 HDD slots, and it supports the following array types:

• RAID 50;
• RAID 60;
• RAID 5;
• RAID 6;
• RAID 10;
• RAID 0;
• RAID 1;
• JBOD;

NAS supports:

• ZFS;
• EXT4;
• EXT3;
• exFAT;
• FAT32 (External Disk Only);
• NTFS (External Disk Only);
• HFS+ (External Disk Read Only);

How to Safely Recover Data from Disk Images

This utility allows you to create a complete copy of a disk and work with the disk image instead of the physical drive. This approach helps protect your data from:

• Overwriting during the recovery process;
• Additional data loss caused by bad sectors;
• User errors.

To create a disk image, follow these steps:

1. Ensure you have enough free space to store the image. Its size will typically match the size of the original disk.

2. In the main window, select the target disk and choose Tools - Save Disk. You can also select multiple disks if needed.

3. When the Image Creation Wizard opens, select whether you want to save the entire disk or only a specific region. Adjust the settings and click Next.

   

4. Choose the directory where the image will be saved. You may select any available disk connected to your PC or upload the image via FTP.

   

Where Are the User’s Files Actually Stored?

The QNAP Turbo Station TS-864eU network-attached storage keeps QTS (QuTS hero) operating system files on a separate RAID 1 (mirrored) array. Usually, all NAS systems create several volumes on every hard disk, and the first of them takes up to 2 Gb of space. This is where operating system files are stored. Other volumes are united into a RAID array where user’s data is written.

RAID Recovery Software: Detailed Comparison