How to Access Data from a Dead Synology NAS (4-Disk RAID, Btrfs) - Tech Support Site

Understanding the Issue

When the mainboard of a Synology NAS dies, the device becomes inaccessible. In such a situation, you may lose access to all the data stored on the NAS. However, there are ways to recover your data without losing it.

Recovering Data from a Dead Synology NAS

To recover data from a dead Synology NAS with a 4-disk RAID and Btrfs file system, you can follow these general steps:

1. Extract the hard drives from the NAS.
2. Connect the hard drives to an external enclosure or a compatible computer.
3. Access the data using data recovery software or the Linux terminal.

Step 1: Extracting the Hard Drives

To extract the hard drives from the Synology NAS, follow these steps:

1. Shut down the NAS and unplug it from the power source.
2. Open the NAS case and locate the hard drives.
3. Gently remove the hard drives from their slots.
4. Connect the hard drives to an external enclosure or a compatible computer using appropriate cables.

Step 2: Accessing the Data

To access the data on the extracted hard drives, you can use data recovery software or the Linux terminal:

Data Recovery Software

There are several data recovery software options available that can help you access data from a dead Synology NAS. Some popular ones include:

• TestDisk
• GetData
• Recoverit

Follow the instructions provided by the data recovery software to access the data on the hard drives.

Linux Terminal

If you're comfortable using the Linux terminal, you can access the data directly using the following steps:

1. Install the necessary software, such as grep, awk, and losetup.
2. Identify the hard drives using the lsblk command.
3. Mount the hard drives using the losetup command.
4. Access the data using the Linux file system.

Here's an example of how to mount a hard drive using the Linux terminal:

sudo losetup /dev/loop0 
 sudo mkdir /mnt/data
 sudo mount /dev/loop0 /mnt/data

In summary, accessing data on a dead Synology NAS with a 4-disk RAID and Btrfs file system can be a challenging task. However, by extracting the hard drives and using data recovery software or the Linux terminal, you can recover your data. Remember to be patient and careful during the process to avoid any potential data loss.

References

• Synology: How to remove a hard drive from a Synology NAS
• TestDisk: Homepage
• GetData: Homepage
• Recoverit: Homepage