How to Fix a NAS Buffalo Drive Station HD-LB1.0TU2 RAID Array with Multiple Disk Issues

Contents

• Why can’t ordinary software tools restore files from RAID?
• How to take hard disks out of the NAS and connect them to a PC?
  • Restoring data with Hetman RAID Recovery
  • Safe recovery from disk images
  • Where are user’s files stored?
  • Comparison of software for RAID recovery

Why can’t ordinary software tools restore files from RAID?

Conventional hard disks keep user’s data by writing it to their surface in a consecutive way, and this is how an entire file is stored on a single hard disk. However, when data is written to a RAID system, a file is divided into several parts. Then these parts are written consecutively to all hard disks within such array. The size of such parts may range from 2 KB to 2 MB, so each file is stored on several hard disks at the same time.

Such approach helps to speed up read and write operations, and it is evident that saving two parts of a file having the size of 1 GB to two hard disks simultaneously is much faster than saving the same 1 GB of data to one hard disk. However, this peculiarity makes file recovery more complicated.

Various RAID levels store information in different ways. Additionally, manufacturers like Buffalo also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

How can the NAS Buffalo Drive Station HD-LB1.0TU2 device's CPU or processing power affect data transfer and potential loss?

The NAS Buffalo DriveStation HD-LB1.0TU2 is a network-attached storage device that allows users to store and access data over a network. The device's CPU or processing power can affect data transfer and potential loss in the following ways:

1. Data Transfer Speed: The CPU of the NAS device plays a crucial role in handling data transfer requests. A more powerful CPU can process these requests faster, resulting in higher data transfer speeds. Conversely, a slower CPU might struggle to handle multiple simultaneous requests, leading to slower transfer speeds.
2. RAID Performance: The NAS Buffalo DriveStation HD-LB1.0TU2 supports RAID configurations for data redundancy and performance improvement. The CPU's processing power affects the performance of RAID calculations, such as parity calculations in RAID 5 or RAID 6. A more powerful CPU can handle these calculations more efficiently, resulting in better RAID performance and faster data transfer speeds.
3. Data Loss Prevention: The CPU also plays a role in ensuring data integrity and preventing data loss. The CPU is responsible for handling error-checking mechanisms, such as checksum calculations, during data transfer. A more powerful CPU can perform these calculations quickly and accurately, reducing the chances of data corruption or loss during transfer.
4. Network Protocol Support: The CPU's processing power can also affect the NAS device's ability to support different network protocols. Some protocols, such as encryption-heavy protocols like SSL/TLS, require more CPU power to handle the encryption/decryption process. If the CPU is not powerful enough, it may struggle to handle these protocols efficiently, potentially affecting data transfer speeds and security.

It's important to note that while the CPU's processing power can impact data transfer and potential loss, it is not the sole factor. Other factors like network bandwidth, storage medium speed, network congestion, and user configuration also play significant roles in overall performance and data integrity.

How to take hard disks out of the NAS and connect them to a PC?

Although NAS Drive Station HD-LB1.0TU2 can be accessed over the network, you still need to take the hard disks out of the storage device and connect them to a Windows computer. Only in this case will the software be able to scan them properly. Here is what you should do:

1. Turn off the storage and disconnect it from the power supply.

   WARNING! Before you start taking hard disks out of your NAS device, read the manual carefully. Incorrect actions may damage your network-attached storage and/or the hard disks within the RAID system.

2. Take the hard disks out of the NAS one by one, carefully removing them from their slots. Remember that the disks are extremely vulnerable: hitting or dropping them may result in serious physical damage.

3. Make sure to mark each hard disk in accordance with how they were installed inside the NAS.

4. Remove the hard disks and connect them to the computer. In this video, we have explored what ports are used to connect hard disks, and what to do if there are not enough ports or connectors.

   Go to view

   

   How to Order Remote Data Recovery

Restoring data with Hetman RAID Recovery

This program recovers data from damaged RAID arrays and is fully compatible with Buffalo Drive Station HD-LB1.0TU2. The hard disks that make up the RAID contain technical information about the algorithm used to save files. When launched, Hetman RAID Recovery reads this information and puts the damaged array together. Then you can open the disk and save your files. Also, you can recover the files accidentally deleted from the network drive.

Go to view

How to recover data from a Buffalo

Drive Station HD-LB1.0TU2 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;

Safe recovery from disk images

This utility lets you save an entire copy of the disk to file and then work with this image instead of the actual disk. Such feature helps to protect data on the disk from:

• Overwriting during the recovery process;
• Loss resulting from bad sectors;
• User mistakes.

To create an image, do the following:

1. Make sure that you have enough free space to save the image. The image file size usually equals the disk size.

2. Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.

3. When the image creation wizard starts, you can choose to save the entire disk or select only a part of it. Specify the parameters and click Next.

   

4. At this stage, you need to choose a directory where to save the image. Choose any disk connected to this PC, or save the image by FTP.

   

Where are user’s files stored?

The Buffalo Drive Station HD-LB1.0TU2 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.

Comparison of software for RAID recovery