How to Restore a NAS Buffalo Drive Station HD-LB3.0TU2 RAID Array with Multiple Disk Failures

Contents

• Why Regular Data Recovery Tools Can’t Restore Files from RAID
• Key Information About the NAS Buffalo Drive Station HD-LB3.0TU2
• 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 Drive Station HD-LB3.0TU2 devices?

Regular system monitoring and alerting can help in early detection and prevention of data loss events on NAS Buffalo Drive Station HD-LB3.0TU2 devices in the following ways:

1. Real-time Monitoring: By implementing a monitoring system, you can continuously monitor the health and performance of your NAS device. This includes monitoring disk usage, CPU and memory utilization, network traffic, and other critical parameters. Any abnormal behavior or potential issues can be detected early on.
2. Disk Health Monitoring: Regular monitoring can keep track of the health of your hard drives, including SMART (Self-Monitoring, Analysis, and Reporting Technology) attributes. By monitoring parameters like temperature, bad sectors, and reallocated sectors, you can identify potential disk failures before they occur and take necessary preventive actions.
3. RAID Monitoring: If your NAS device is configured with RAID (Redundant Array of Independent Disks), monitoring the status of the RAID array is crucial. Regular monitoring can help you identify any degraded or failed disks, rebuilding issues, or other RAID-related problems. This allows you to take immediate action to prevent data loss.
4. Backup Monitoring: Monitoring the backup process is essential to ensure that your data is being regularly backed up to another location or device. By monitoring the backup status, you can detect any failures or inconsistencies in the backup process, enabling you to rectify the issue and prevent potential data loss.
5. Event Log Monitoring: NAS devices typically maintain event logs that record important system events and errors. Regularly monitoring these logs can help you identify any unusual activities, errors, or warnings that may indicate a potential data loss event. By proactively addressing these issues, you can prevent data loss and ensure the integrity of your data.
6. Alerting and Notifications: Setting up alerts and notifications within your monitoring system is crucial. This ensures that you are immediately notified of any critical events or potential data loss situations. Alerts can be sent via email, SMS, or other communication channels, allowing you to take immediate action to prevent or mitigate data loss.

By implementing regular system monitoring and alerting, you can proactively detect and prevent data loss events on your NAS Buffalo Drive Station HD-LB3.0TU2 devices, minimizing the risk of data loss and ensuring the availability and integrity of your data.

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

Although the NAS Drive Station HD-LB3.0TU2 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 Buffalo Drive Station HD-LB3.0TU2. 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 Buffalo

Drive Station HD-LB3.0TU2 has 1 HDD slots, and it supports the following array types:

• RAID 0;
• RAID 1;
• 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 Drive Station HD-LB3.0TU2 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