How to Recover Files from a RAID Disk When NAS Buffalo TeraStation TS-RH2.0TGL/R5 Won’t Boot

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Buffalo TeraStation TS-RH2.0TGL/R5
• 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 Buffalo 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 regular system monitoring and alerting help in early detection and prevention of data loss events on NAS Buffalo TeraStation TS-RH2.0TGL/R5 devices?

Regular system monitoring and alerting can help in early detection and prevention of data loss events on NAS Buffalo TeraStation TS-RH2.0TGL/R5 devices in the following ways:

1. Disk Health Monitoring: By regularly monitoring the health of the hard drives in the NAS device, you can detect early signs of disk failure or degradation. Many NAS devices, including Buffalo TeraStation, provide SMART (Self-Monitoring, Analysis, and Reporting Technology) data that can be monitored for indicators of potential disk failure. Setting up alerts for critical SMART attributes can help you take proactive measures, such as replacing the failing drive before it completely fails and causes data loss.
2. RAID Monitoring: NAS devices like Buffalo TeraStation usually support various RAID configurations for data redundancy and protection. Monitoring the RAID status is crucial to identify any issues or failures. Regularly checking the RAID status and receiving alerts for degraded or failed RAID arrays allows you to take immediate action to rebuild or replace the failed disks and prevent data loss.
3. File System Monitoring: Monitoring the file system integrity on the NAS device can help detect any corruption or inconsistencies in the stored data. Regularly scanning the file system for errors and receiving alerts for any issues can enable you to address them promptly and prevent further data loss.
4. Network Monitoring: Monitoring the network connectivity and performance of the NAS device can help identify any network-related issues that may impact data accessibility or integrity. Regularly monitoring network connections, bandwidth usage, and latency can help you detect potential issues early on and take corrective measures to prevent data loss events.
5. Backup Monitoring: If you have set up regular backups of your data from the NAS device, monitoring the backup process is essential. Ensure that the backups are running successfully, and receive alerts for any backup failures or issues. This way, you can quickly identify and resolve backup-related problems, ensuring that you have a recent and valid backup to restore from in case of data loss events.

By implementing regular system monitoring and alerting for your NAS Buffalo TeraStation TS-RH2.0TGL/R5 devices, you can proactively detect and address potential issues, minimizing the risk of data loss and ensuring the integrity and availability of your data.

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

Although the NAS TeraStation TS-RH2.0TGL/R5 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.

   Go to view

   

   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 Buffalo TeraStation TS-RH2.0TGL/R5. 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.

Go to view

How to recover data from a Buffalo

TeraStation TS-RH2.0TGL/R5 has 4 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• RAID 5;
• RAID 6;
• JBOD;

NAS supports:

• exFAT, VFAT, FAT 12 / 16 / 32;
• NTFS / ReFS;
• APFS / HFS+;
• Ext2 / 3 / 4 / ReiserFS / XFS / UFS / ZFS / Btrfs;
• VMFS / HikvisionFS;

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 Buffalo TeraStation TS-RH2.0TGL/R5 network-attached storage keeps OS Linux 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