What Exactly Is NAS

NAS, short for Network Attached Storage, literally means a device that is connected to the network and has a data storage function, so it is also called Network Storage. NAS is a dedicated data storage server, including storage devices (such as disk arrays, CD/DVD drives, tape drives, or removable storage media) and embedded system software, which can provide cross-platform file sharing functions.

In this tutorial, we are going to show you how you can access your RAID-based NAS drives and get data off before formatting, resetting, or re-configuring the NAS configuration. 

NAS data recovery

Common NAS Data Loss Scenarios

A RAID-based NAS data loss could be due to the following reasons:

  • Accidental deletion or formatting
  • Abrupt power failure or improper shutdowns
  • Server overheating
  • Virus or malware attack
  • OS crashes or other errors
  • Hardware controller failure
  • Multiple disk failure

NAS Data Recovery Software Free Download

NAS, while a reliable solution for expanding storage space, can also have data problems. If you cannot access data stored on the NAS, delete data on the NAS by mistake, format the NAS disk, or lose data due to a virus attack, you can try special NAS data recovery software.

EaseUS NAS data recovery software is one of the top-notch data recovery software that provides various file recovery services, including emptied Recycle Bin recovery, formatted hard drive recovery, lost partition recovery, deleted file recovery, NAS and cloud data recovery, and more.

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

Highlights of EaseUS NAS data recovery software are as follows.

Supported NAS Disk Brands:

QNAP, Synology, Lacie, Iodata, Buffalo, DLink, Seagate, Western Digital, and Thecus NAS devices configured as a single drive, RAID 0, RAID 1, or RAID 5

Supported Operating Systems:

Windows 7, 8, 10, 11, and Windows Server 2003, 2008, 2012, 2016, 2019 32 or 64 bit

Supported File Types:

  • Documents: Word (DOC/DOCX), Excel (XLS/XLSX), PPT (PPT/PPTX), PDF, HTML/HTM etc.
  • Videos: AVI, MOV, MP4, M4V, 3GP, WMV, MKV, FLV, SWF, RM/RMVB, MPEG, etc.
  • Other Files: Audio files, email, archives, and more

How to Recover Data from NAS Server Directly

EaseUS NAS data recovery software can help you restore data from NAS devices in simple steps.  Follow the steps below to recover NAS data easily.

Step 1. Select a NAS server and start recovering.

Download and install EaseUS Data Recovery Wizard on your Windows 11/10 64-bit computer. When you open this software, select "NAS Recovery". All the NAS servers will be automatically listed, choose your target NAS device and click "Scan".

Select a NAS server and start recovering

Step 2. Enable SSH service on the NAS server.

Go to "Control Panel > Terminal & SNMP" to check the "Enable SSH service" box. Then view and remember the port for remote access open EaseUS Data Recovery Wizard and click "Next".

Enable SSH service on the NAS server.

Step 3. Connect to the NAS server remotely.

This software will detect your IP and Port automatically. All you need to do is input the user name and password. If the IP address or Port is not right, you can correct it manually. Then, click "Connect Now".

Connect to the NAS server remotely.

Step 4. Recover lost/deleted NAS data

Then, EaseUS data recovery software will connect to your NAS and start a NAS device scanning. After the scan, you will see all the deleted, lost, or existing files on your NAS server. 

You can apply the "Filter" feature or click the "Search files or folders" option to find the lost files on the hard drive. Select wanted NAS files that you lost on the server and click "Recover" to save them to another location.

Click the "Recover" button to restore deleted NAS files.

Recover lost/deleted NAS data

How to Recover Data from NAS Hard Drive Step by Step

In simple terms, the procedure is to remove the disk from the NAS, connect the hard drive to your PC, and then use data recovery software to extract and save files.

Before recovering data, you need to:

1. Remove the disk from NAS. Power off and plug out disks one by one. 


When you take disks out of the NAS, label them based on which bay they belong to. These marks will help you put them back together in the same way. Besides, when you remove the NAS drives, do not violate the warranty.

2. Connect the drive to your PC. You can use SATA cables to connect the disk directly to your PC's motherboard or use USB-to-SATA adapters together with power. When the disks show up on the PC and you are asked to "Initialize disks" or "Format" the connected NAS devices, don't do that.

3. Ensure enough external/internal hard drive or another network storage space (equivalent or more than the volume of recovered data from failed NAS drives) to keep the restored data from NAS.

4. Download NAS recovery software: EaseUS Data Recovery Wizard. 

After finishing these preparations, launch EaseUS file recovery software to recover data on Synology NAS or other NAS services using a PC.

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

Step 1. Scan the RAID drive

Choose the RAID drive from which you wish to recover data, and then click "Scan". Wait for the scanning process to finish, the deleted files will show up one by one.

choose the raid hard drive

Step 2. Find and preview lost RAID files

You can use "Filter" as quick navigation to find deleted or lost files. Besides, you can also use Search to find your lost RAID drive files via its file name or file extension.

scan the RAID drive

Step 3. Restore lost RAID drive files

Select the wanted files and click "Recover". Browse to save these files to another secure location.

recover data from the RAID drive

How to Recover NAS Data with Manual Service

If you are not good at managing NAS/RAID drives, you can turn to experts. EaseUS Manual Data Recovery Service offers the following services after FREE diagnosis. Contact the experts to get help now.

EaseUS RAID Data Recovery Services

Click here to contact our experts for a free evaluation

Consult with EaseUS data recovery experts for one-on-one manual recovery service. We could offer the following services after FREE diagnosis. Our decades-experienced engineers are knowledgeable and can repair the damaged RAID structure and restore data from all RAID levels.

  • Restore data from all RAID levels, including RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, etc.
  • Recover data from enterprise RAIDs such as QNAP, Synology, WD, Buffalo, etc.
  • Retrieve lost RAID data caused by any issues
  • Fix disks that become GPT protected partitions
  • Recover data from RAID remotely, no need to ship

More Information on NAS Data Recovery

Check the following content to learn more about NAS data recovery.


NAS consists of multiple components, including hardware (one or more hard disks, processors, and RAM enclosed in a hard disk box) and software (an operating system that manages access and network connectivity. NAS devices with multiple hard disks usually have a RAID (Redundant Array of Independent Disks) for data redundancy. If RAID is enabled on the storage system, you can connect two or more hard disks to the system so that they operate as one very large, high-speed hard disk.

Most NAS devices use different types of RAID to ensure fault tolerance and data consistency. Many NAS vendors provide their customers with proprietary RAID management systems that are capable of combining different hard disks into fairly complex RAID systems, but users do not need to have much knowledge of RAID technology.

How Much Does a NAS Cost?

NAS devices are not cheap. A NAS that handles a lot of multimedia files will set you back at least a few hundred dollars, and that doesn't include the cost of hard drives, which can cost anywhere from $50 to $200.  

However, NAS is more cost-effective than cloud storage. Assuming 1 TB of cloud storage costs $25 a month, 20 TB of cloud storage will set you back $500 a month. While you might pay a few thousand dollars for NAS storage and a few disk drives, it's a far better deal than the long-term investment in cloud storage.


SAN, Storage Area Networking, is the development of the traditional DAS (Data Acquisition Station) technology, is suitable for a large number of data block access. The core of SAN technology is the SAN switch, which serves as a data exchange channel. It has the advantages of high speed, low latency, high data consistency, wide connectivity, remote support, and flexible management.

NAS is a dedicated network file server, which separates storage devices from servers and centrally manages data to release bandwidth, improve performance, and reduce costs. It is much cheaper and more efficient than using server storage.

NAS is different from SAN suitable for applications. SAN is suitable for large data block access, while NAS provides flexible personal and enterprise disk space services for office automation, advertising, education, tax, and more. NAS is mainly applied to free E-mail space registration, FTP server, multimedia and image industry, the financial securities industry, and other industries that require a large amount of data storage.


Network Attached Storage (NAS) devices are a great solution when your data volume exceeds the capacity of your desktop hard disk storage and you want to share access to files and media across multiple computers, phones, and tablets. If you experience data loss while using the NAS, use professional NAS data recovery software to help you quickly recover important data.

 Download for Win Recovery Rate 99.7%
 Download for Mac Trustpilot Rating 4.7

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Updated by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech lives easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. In her spare time, she loves sharing things about her favorite singer - Taylor Swift on her Facebook or Twitter.

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Written by Cedric

Cedric Grantham is one of the senior editors and data recovery specialists of EaseUS who lives and works in Chengdu, China. He mainly writes articles and how-to tips about data recovery tutorials on PC and Mac. He has handled 10,000+ data recovery cases and is mainly good at data recovery of NTFS, FAT (FAT32 and ExFAT) file systems, and RAID structure reorganization of RAID 0, 5, and 10.

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