- 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?
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 Promise 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 the use of specific data recovery software or services impact the success rate of data retrieval from NAS Promise Vess 1840+ devices?
Yes, the use of specific data recovery software or services can impact the success rate of data retrieval from NAS Promise Vess 1840+ devices. The success rate depends on various factors, including the capabilities and compatibility of the software or service with the specific NAS device and its file system.
Data recovery software designed specifically for NAS systems, such as those that support the Promise Vess 1840+ device, may have better success rates as they are tailored to handle the unique file systems and storage configurations used in NAS devices. These software solutions often have advanced algorithms and techniques to recover data from various types of storage media.
Similarly, professional data recovery services that specialize in NAS recovery and have experience with Promise Vess 1840+ devices may have higher success rates. These services typically have specialized tools, equipment, and expertise to handle complex data loss scenarios and can maximize the chances of successful data retrieval.
It is important to note that the success rate of data retrieval also depends on the specific circumstances of the data loss, such as the cause of the data loss, the extent of damage or corruption, and the actions taken after the data loss occurred.
How to take hard disks out of the NAS and connect them to a PC?
Although NAS Vess 1840+ 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
Restoring data with Hetman RAID Recovery
This program recovers data from damaged RAID arrays and is fully compatible with Promise Vess 1840+. 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.
Vess 1840+ has 16 HDD slots, and it supports the following array types:
- RAID 0;
- RAID 1;
- RAID 1E;
- RAID 3;
- RAID 5;
- RAID 6;
- RAID 30;
- 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 Promise Vess 1840+ 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 |
Yes, data recovery from a NAS Promise Vess 1840+ device can be performed even if there are issues with the network connectivity. The NAS device typically has multiple methods of accessing and recovering data, including direct connection via USB or eSATA ports.
If there are network connectivity issues, you can connect a computer directly to the NAS device using a USB or eSATA cable. This allows you to access the storage drives directly and recover data without relying on network connectivity.
Additionally, if the NAS device has multiple network ports, you can try connecting to a different port or using a different network cable to troubleshoot the network connectivity issues.
In case of severe hardware or software issues with the NAS device, it is recommended to contact a professional data recovery service provider who specializes in NAS devices to ensure the best chance of successful data recovery.