Features of Data Recovery from NAS QNAP VS-6112 Pro+ in a Home Setup

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS QNAP VS-6112 Pro+
• 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.

How can continuous data protection mechanisms help in minimizing potential data loss on NAS QNAP VS-6112 Pro+ devices?

Continuous data protection (CDP) mechanisms can help minimize potential data loss on NAS QNAP VS-6112 Pro+ devices in the following ways:

1. Real-time Data Replication: CDP mechanisms continuously replicate data in real-time, ensuring that any changes made to the data are immediately backed up. This minimizes the risk of data loss in case of hardware failures or accidental deletions.
2. Point-in-Time Recovery: CDP allows for point-in-time recovery, meaning that you can restore data to a specific point in time before a data loss event occurred. This is particularly useful in case of ransomware attacks or data corruption, as you can roll back to a clean state.
3. Incremental Backups: CDP mechanisms typically use incremental backups, where only the changed data is backed up. This reduces the backup window and minimizes the impact on system performance. In case of a failure, you can restore the latest backup and apply the incremental changes to recover the most up-to-date data.
4. Continuous Monitoring: CDP solutions continuously monitor the health and integrity of the data on the NAS device. They can detect and alert you to any potential issues, such as disk failures or file system corruption, allowing you to take proactive measures to prevent data loss.
5. Off-site Replication: CDP mechanisms often support off-site replication, where data is replicated to a remote location or cloud storage. This provides an additional layer of protection against localized disasters, such as fire or theft, ensuring that your data is safe and accessible even in such scenarios.
6. Granular Recovery Options: CDP solutions often offer granular recovery options, allowing you to restore individual files, folders, or even specific versions of files. This flexibility helps minimize the impact of data loss by quickly recovering only the necessary data.

By implementing continuous data protection mechanisms, you can significantly reduce the risk of data loss on NAS QNAP VS-6112 Pro+ devices and ensure the availability and integrity of your data.

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

Although the NAS VS-6112 Pro+ 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 VS-6112 Pro+. 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

VS-6112 Pro+ 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 VS-6112 Pro+ 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