NAS QNAP VS-S2212 Pro+ RAID Arrays: Mechanical and Logical Failures Recovery Tips

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS QNAP VS-S2212 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.

Are there any precautions to take while replacing or upgrading hard drives in NAS QNAP VS-S2212 Pro+ devices?

Yes, there are several precautions to take while replacing or upgrading hard drives in NAS QNAP VS-S2212 Pro+ devices:

1. Backup your data: Before replacing or upgrading the hard drives, it is crucial to back up all your data to ensure that you don't lose any important files.
2. Shut down the NAS properly: Make sure to shut down the NAS properly before replacing or upgrading the hard drives. This will prevent any data corruption or damage to the system.
3. Use compatible hard drives: Ensure that the new hard drives you are installing are compatible with the QNAP VS-S2212 Pro+ device. Check the QNAP website or user manual for the list of supported drives.
4. Follow the correct drive installation procedure: Carefully follow the drive installation procedure provided by QNAP. This may involve removing the old drives, installing the new ones, and configuring them correctly.
5. Handle the hard drives with care: When handling the hard drives, avoid dropping them or exposing them to static electricity. Use proper anti-static precautions and handle the drives gently to prevent any physical damage.
6. Configure RAID settings: If you are using RAID configuration, make sure to configure the new drives correctly to maintain the desired RAID level. This may involve rebuilding the RAID array or configuring RAID settings through the NAS interface.
7. Monitor the drive health: After replacing or upgrading the hard drives, regularly monitor their health using the QNAP NAS management interface. This will help you detect any potential issues or failures early on.
8. Seek professional help if needed: If you are unsure about the process or encounter any difficulties, it is recommended to seek professional help or contact QNAP support for assistance.

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

Although the NAS VS-S2212 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-S2212 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-S2212 Pro+ has 2 HDD slots, and it supports the following array types:

• RAID 1;

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-S2212 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