Home NAS QNAP TVS-663 Data Recovery: Features and Steps Explained

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS QNAP TVS-663
• 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.

Can the use of specific data synchronization or replication mechanisms mitigate data loss risks for NAS QNAP TVS-663 devices?

Yes, the use of specific data synchronization or replication mechanisms can help mitigate data loss risks for NAS QNAP TVS-663 devices.

QNAP provides various data synchronization and replication features that can be utilized to ensure data redundancy and minimize the risk of data loss. Some of these mechanisms include:

1. RAID: The TVS-663 supports various RAID configurations, such as RAID 1, 5, 6, and 10. RAID provides data redundancy by distributing data across multiple drives, allowing for automatic recovery in case of a drive failure.
2. Snapshot: QNAP NAS devices offer snapshot technology, which enables users to take point-in-time snapshots of their data. Snapshots can be used to restore files or folders to a previous state in the event of accidental deletion or data corruption.
3. RTRR (Real-Time Remote Replication): RTRR is a real-time data replication feature that allows users to replicate data from one QNAP NAS to another over the network. It ensures that data changes are immediately synchronized between the source and target NAS, providing an additional layer of data protection.
4. Qsync: Qsync is a file synchronization feature that allows users to sync files between the TVS-663 and multiple devices, such as computers, laptops, and mobile devices. It ensures that the latest version of files is available across all synced devices, reducing the risk of data loss.
5. Backup Solutions: QNAP NAS devices support various backup solutions, including QNAP's own Hybrid Backup Sync, as well as third-party backup software like Acronis True Image and Veeam Backup & Replication. These solutions enable users to schedule regular backups of their data to external storage devices or cloud storage services, providing an additional layer of data protection.

By leveraging these data synchronization and replication mechanisms, users can significantly reduce the risk of data loss on QNAP TVS-663 devices. However, it is important to regularly monitor and maintain these mechanisms to ensure their effectiveness and reliability.

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

Although the NAS TVS-663 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 TVS-663. 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

TVS-663 has 6 HDD slots, and it supports the following array types:

• RAID 6;
• RAID 5;
• 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 TVS-663 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