What are the different file access levels available on the NAS Uniview VS-R5220-B2T?

The NAS Uniview VS-R5220-B2T supports different file access levels, including:Administrator: This is the highest access level and allows full control over the NAS system. Administrators can manage users, groups, shared folders, and other system settings.User: Users have read and write access to their own files and folders. They can create, modify, and delete files within their assigned folders. However, they do not have access to system settings or other users' files.Group: Group access levels can be assigned to multiple users. It allows users within the same group to access shared folders and collaborate on files. The group access level can be customized based on specific permissions and restrictions.Guest: This access level is for temporary or limited access. Guests can access specific shared folders or files with restricted permissions. They usually have read-only access and cannot modify or delete files.Public: Public access allows unrestricted access to specific shared folders or files. Anyone with network access can read, modify, or delete files within the public folders.These access levels provide different levels of control and security, allowing administrators to manage and restrict access to files and folders on the NAS Uniview VS-R5220-B2T.

How can I configure file access levels on the NAS Uniview VS-R5220-B2T to ensure proper security and permissions?

To configure file access levels on the NAS Uniview VS-R5220-B2T, follow these steps:Access the NAS interface: Open a web browser and enter the IP address of the NAS in the address bar. Login with your admin credentials.Create user accounts: Go to the 'Control Panel' or 'Users' section and create user accounts for each person who needs access to the files. Assign a unique username and password for each user.Set user permissions: Once the user accounts are created, go to the 'Shared Folders' or 'File Sharing' section. Select the folder you want to configure access levels for and click on 'Edit' or 'Permissions'.Configure folder permissions: In the permissions settings, you can specify read, write, and execute permissions for each user or group. Assign appropriate permissions based on the level of access required for each user.Create user groups (optional): If you have multiple users with similar access requirements, create user groups. Assign permissions to these groups instead of individual users to simplify management.Enable access control lists (ACLs): If the NAS supports ACLs, enable this feature. ACLs allow for more granular control over file access permissions, including setting permissions for specific files or subfolders within a shared folder.Enable encryption and secure protocols: To ensure data security during transmission, enable encryption protocols such as SSL/TLS. Also, enforce the use of secure file transfer protocols like SFTP or FTPS.Regularly review and update permissions: Periodically review the access levels and permissions assigned to users and groups. Remove unnecessary permissions, revoke access for former employees, and adjust permissions as needed.Enable audit logs: Enable logging and auditing features on the NAS to track file access and changes. This helps in monitoring and identifying any unauthorized access attempts or suspicious activities.Regularly backup data: Implement a regular backup strategy to ensure data availability and recovery in case of accidental deletion, hardware failure, or security breaches.By following these steps, you can configure file access levels on the NAS Uniview VS-R5220-B2T to ensure proper security and permissions.

Can you explain the differences between read-only access, read-write access, and administrator access on the NAS Uniview VS-R5220-B2T?

Read-only access, read-write access, and administrator access are different levels of permissions granted to users on the NAS Uniview VS-R5220-B2T. Here's an explanation of each:Read-only access: Users with read-only access have the ability to view and access files and folders stored on the NAS. They can open, read, and copy files, but they cannot make any changes or modifications to them. This level of access is suitable for users who only need to retrieve information without altering any data.Read-write access: Users with read-write access have the same privileges as read-only users, but with the additional capability to modify files and folders. They can create, edit, delete, and rename files, as well as move them between folders. This level of access is typically given to users who need to actively work with the stored data, such as making changes to documents or uploading new files.Administrator access: Administrator access provides the highest level of control and permissions on the NAS. Administrators have full control over all aspects of the NAS, including managing user accounts, setting up shared folders, configuring system settings, and assigning access permissions to other users. They can perform tasks like creating user accounts, granting or revoking access privileges, and managing the overall operation of the NAS.It's important to carefully assign access levels to users based on their roles and responsibilities to ensure data security and prevent unauthorized modifications or deletions.

Practical Steps for Accessing Files on a RAID Disk Without a Working NAS Uniview VS-R5220-B2T (RAID 5, 6, 0, 1, JBOD, etc)

Name: How to recover data from a Uniview
Uploaded: 2024-05-28T16:15:50+03:00
Description: How to recover data from a Uniview

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?

RAID Recovery™ 2.6

Recover data from damaged RAID arrays inaccessible from a computer.

Download

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 Uniview also introduce some modifications to this process, and that is why data can be written to hard disk in a wide variety of ways.

Can remote access to NAS Uniview VS-R5220-B2T devices pose additional data loss risks?

Remote access to NAS (Network Attached Storage) devices, including the Uniview VS-R5220-B2T, can potentially pose additional data loss risks if not properly secured or configured. Here are some factors to consider:

Weak authentication: If remote access to the NAS device is protected by weak or easily guessable passwords, it increases the risk of unauthorized access. Attackers could potentially delete or modify data, leading to data loss.
Vulnerabilities: NAS devices, like any other technology, may have security vulnerabilities that can be exploited by attackers. If the device is not regularly updated with security patches, it may be susceptible to attacks that could result in data loss.
Misconfiguration: Improperly configuring remote access settings on the NAS device can open up security loopholes. For example, leaving unnecessary ports open or not using encryption can make it easier for attackers to gain access and manipulate or delete data.
Malware or ransomware attacks: If a remote user's device used to access the NAS is infected with malware or ransomware, there is a risk that the malicious software could spread to the NAS device and cause data loss. This emphasizes the importance of ensuring remote devices are adequately protected.

To mitigate these risks and ensure the security of remote access to NAS devices, it is recommended to follow best practices:

Implement strong authentication mechanisms, such as multi-factor authentication (MFA), to prevent unauthorized access.
Regularly update the NAS device's firmware and software to patch any security vulnerabilities.
Configure the NAS device's firewall to only allow necessary ports for remote access and use secure protocols like SSH or VPN.
Ensure that the remote devices accessing the NAS are protected with up-to-date antivirus and anti-malware software.
Regularly back up the data stored on the NAS to a separate location to minimize the impact of potential data loss.

By following these precautions, the additional data loss risks associated with remote access to NAS devices can be significantly reduced.

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

Although NAS VS-R5220-B2T 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:

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.
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.
Make sure to mark each hard disk in accordance with how they were installed inside the NAS.
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 Uniview VS-R5220-B2T. 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 Uniview

VS-R5220-B2T has 12 HDD slots, and it supports the following array types:

RAID 0;
RAID 1;
RAID 5;
RAID 6;
RAID 50;
RAID 60;
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:

Make sure that you have enough free space to save the image. The image file size usually equals the disk size.
Select the disk in the main window, and choose from the menu Tools – Save Disk. You can select multiple disks to be saved.
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.
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 Uniview VS-R5220-B2T 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

Product	Operating system	License type	RAID controller support	Supported file systems	Virtual RAID controller support	Data recovery from damaged RAID	File preview
Hetman RAID Recovery	Windows	Paid	Yes, over 100 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes
DiskInternals RAID Recovery	Windows	Paid	Yes, over 100 controllers	FAT, NTFS, Ext2/3/4, HFS+	No	Yes	Yes
R-Studio	Windows, Mac, Linux	Paid	Yes, over 200 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes
UFS Explorer RAID Recovery	Windows, Mac, Linux	Paid	Yes, over 1,000 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes
EaseUS Data Recovery	Windows	Paid	Yes, over 20 controllers	FAT, NTFS, Ext2/3/4, HFS+	No	Yes	Yes
ReclaiMe Free RAID Recovery	Windows	Free	Yes, over 100 controllers	FAT, NTFS, Ext2/3/4, HFS+	Yes	Yes	Yes