Recovering RAID Disk Files Without a Working NAS Buffalo TeraStation TS5200D0402V5

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.

Are there any known limitations or performance bottlenecks that can increase data loss risks for NAS Buffalo TeraStation TS5200D0402V5 devices?

There are a few known limitations and performance bottlenecks that can potentially increase data loss risks for NAS Buffalo TeraStation TS5200D0402V5 devices. These include:

1. RAID Configuration: The TeraStation TS5200D0402V5 supports various RAID configurations, such as RAID 0, RAID 1, RAID 5, and RAID 6. However, certain RAID configurations like RAID 0 offer no data redundancy, meaning that if one drive fails, all data can be lost.
2. Drive Failures: If one or more drives in the NAS device fail, it can result in data loss. While the TeraStation TS5200D0402V5 supports RAID configurations for data redundancy, it is still important to regularly monitor the health of the drives and replace any failed drives promptly.
3. Network Issues: The performance of a NAS device can be affected by network issues such as bandwidth limitations, network congestion, and packet loss. These issues can impact data transfer speeds and potentially increase the risk of data loss during file transfers.
4. Hardware Limitations: The performance of the TeraStation TS5200D0402V5 can be limited by its hardware specifications, such as the processor, memory, and network interface. If the device is underpowered for the workload or has insufficient resources, it may not be able to handle large file transfers or multiple concurrent users efficiently, increasing the risk of data loss.
5. Lack of Backup: While the TeraStation TS5200D0402V5 can provide data redundancy through RAID configurations, it is still recommended to have a separate backup solution in place. This is because RAID configurations cannot protect against other forms of data loss, such as accidental deletion, file corruption, or catastrophic events like fire or theft.

To mitigate these risks, it is important to regularly monitor the health of the NAS device, perform backups to an external storage or cloud solution, and ensure that the network infrastructure is properly configured and optimized for data transfer.

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

Although NAS TeraStation TS5200D0402V5 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.

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   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 TeraStation TS5200D0402V5. 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.

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How to recover data from a Buffalo

TeraStation TS5200D0402V5 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 TeraStation TS5200D0402V5 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