NAS Synology DiskStation DS213+ / DS213 / DS213j / DS213air RAID Arrays: Data Recovery Advice After Natural Component Wear

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Synology DiskStation DS213+ / DS213 / DS213j / DS213air
• 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 Synology 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 data be recovered from a NAS Synology DiskStation DS213+ / DS213 / DS213j / DS213air device after a malfunction or data loss event?

To recover data from a malfunctioning or data loss event on a Synology DiskStation DS213+ / DS213 / DS213j / DS213air device, you can follow these steps:

1. Identify the cause of the malfunction: Determine whether the issue is related to hardware failure, software corruption, or accidental data deletion. This will help you choose the appropriate recovery method.
2. Contact Synology Support: If your device is still under warranty or you have an active support contract, reach out to Synology Support for assistance. They can guide you through the recovery process or provide recommendations based on your specific situation.
3. Check for backup: If you have a backup of your data, you can restore it to the NAS device. Synology DiskStation devices offer various backup options, including local backups to external drives or remote backups to cloud services. Refer to the Synology documentation for instructions on how to restore data from a backup.
4. Use data recovery software: If you don't have a backup or the backup is incomplete, you can try using data recovery software specifically designed for NAS devices. Some popular options include DiskGenius, R-Studio, and EaseUS Data Recovery Wizard. Install the software on a separate computer and connect the malfunctioning NAS device to it. Follow the software instructions to scan for recoverable data and attempt to recover it.
5. Seek professional data recovery services: If the above methods fail or you are dealing with severe data loss due to physical damage or RAID failure, it is recommended to seek professional data recovery services. Contact a reputable data recovery company with experience in NAS devices. They have specialized tools and expertise to recover data from damaged or failed NAS devices.

Remember, in any data loss situation, it is crucial to avoid further writes or modifications to the affected NAS device to prevent overwriting the lost data.

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

Although the NAS DiskStation DS213+ / DS213 / DS213j / DS213air 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 Synology DiskStation DS213+ / DS213 / DS213j / DS213air. 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 Synology

DiskStation DS213+ / DS213 / DS213j / DS213air has 2 HDD slots, and it supports the following array types:

• Synology Hybrid RAID;
• RAID 1;
• RAID 0;
• Basic;
• JBOD;

NAS supports:

• EXT4;
• EXT3 (External Disk Only);
• FAT32 (External Disk Only);
• NTFS (External Disk 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 Synology DiskStation DS213+ / DS213 / DS213j / DS213air network-attached storage keeps DSM (DiskStation Manager) 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