 Hello everybody! With this video to find out how to recover data from a crashed RAID system if its Dell H310 controller broke down, and how to recover data from SAS from SAS drives. The controller is a key component for organizing and managing your RAID system, and when it stops working, you might face grave consequences. When the controller is down, your RAID is no longer operable, and your data cannot be accessed. There is a wide variety of things that may knock out a controller. Overfailers, all kinds of damage, defects, and even rock configuration. As a result, you lose access to important files, documents, or media content. If you face this kind of problem, don't give way to despair. There are certain methods and tools to help you cope with the problem and restore access to your data. We will start a situation when all problems are caused by the faulty Dell H310 controller, and find out how to retrieve data from a crashed RAID system. Just suppose you have taken all possible steps to make sure that all troubles are caused by the controller. If the controller is not to blame, don't worry, this tutorial is good for any scenario when information is lost from hard disks. For better understanding of the recover process, let's explore how to create a RAID system on this specific device. When creating a disk RAID, we'll pay attention to the settings you may need to know in the course of recovery. To build a RAID system, open the controller's bias. For this model, use the key shortcut Ctrl-R. When the hardware is initialized, the bias window appears. In the Virtual Disk Management tab, VD Management, you will see the connected drives. To create a new array, press F2 on your keyboard. Then choose Create New VD. In the Virtual Disk Manager window, the opens select the RAID level using the arrow keys to navigate the list, as well as the Enter and Tab keys. Press Space to select a disk. Select the level, choose disks, give it a virtual disk name and add advanced settings if necessary. Take note of array parameters. You may need to enter them during the recovery process. For confirmation, jump to the OK button and press Enter. As a result, you will see a warning that all data on this virtual disk will be erased, so click OK to confirm it. After that, the process of disk initialization begins. When it's over, restart the computer. And now the RAID is ready for work. Now that we have examined and remembered RAID system settings, let's explore the recovery process. As I said before, when the controller breaks down, the array becomes inoperable, and this means you lose access to all your files. To restore the RAID operability, you will need a controller of exactly the same model, which will allow you to rebuild the crashed RAID with the alt configuration and without losing any data. Also, you can try using a compatible controller model, which can upload a third-party configuration and restore the RAID. However, before taking any steps in this direction, you should study this topic carefully, because any mistake can make the recovery process even more complicated. If you don't have a chance to replace the controller, while the replacement operation didn't help you to rebuild the crashed array, use a specialized recovery tool – Hetman RAID Recovery. This utility supports all popular RAID types, mixed file systems and various array patterns used by various RAID controllers. For data recovery, you need to connect all the hard disks to the motherboard of a Windows computer. If there are SAS drives, you will need special adapters or, for example, an HBA controller, which allows to connect the drives directly without using the RAID technology. When connecting the disks with a RAID controller that supports direct connection, you need to clear the alt configuration to switch BIOS to non-RAID mode. As a result, it may complicate the recovery process since this operation erases the beginning of the disk and destroys serious information required to identify RAID settings. On the other hand, an HBA controller lets you connect the drives directly without clearing the RAID configuration. Having connected the disks, check if the program recognized all connected devices. If only some of them are displayed, open the Disk Management app and review the list. If the system can't see all the disks, you will have to connect them one by one and create disk images and then recover data from those images. To create a disk image, right-click on a disk and choose Save Disk. Make sure that the option to save the entire disk is active and click Next. Choose to save it to hard disk. Give the password to save the image. You can also save it to a network folder, click Save. Having saved the images for each disk, you should mount them in the utility. Click the Tools menu, Mount Disk, Raw Images, select the disks and click Open. As a result, the utility will use the images, as deeply were physical disks, to rebuild the RAID automatically. Select it and check its parameters below to see if the utility has built it correctly. These are the same properties that we looked at when the array was created a bit earlier. If the program rebuilt the array correctly, right-click on the volume and choose Open. Choose the search type FastCAN or Full Analysis. For more simple cases, FastCAN is enough. You can see that the program has no difficulty in rebuilding the RAID from the saved SES images and finding the files that used to be stored on the disk array. It has also found the files that have been deleted. They are marked with Red Cross. You can use the Preview window to see their contents. Select all the items you want to recover and click the Recovery button. Choose the path where to save them, choose the Disk Confolder and click Recover again. When the recovery process is over, you will see all the files in the specified directory. In some situations, the program may fail to rebuild the RAID automatically. It can happen when the service information on the disk is erased, so the program cannot identify parameters of the crashed RAID. For such situations, the program has the manual mode for rebuilding with a RAID constructor. The feature will help you rebuild the array if you cleared a third party configuration or erased the beginning of the disk. To use this mode, you need to know all the information about the array. Open the constructor. Choose manual mode. Specify the properties RAID Level, Block Order and Size. Add the disks it used to include. You may have to specify the offset, which tells you where the beginning of the disk is located. After that, give the disk order. When you give all the parameters you know, you will see your RAID. Any fault properties are correct, you will see its folders here. Click Add, and it will appear in the Drive Manager immediately. Now start the scan, search for files and recover the ones you need. Data recovery after RAID controller failure is a task that requires special attention. If you are not too confident of your skills, then it's better to contact professionals. Any wrong actions can erase the remaining information completely. I hope that our advice and recommendations will help you restore access to important files and minimize losses. And that is all for now. I hope this information was useful for you. Remember to click the Like button and subscribe to our channel. Thank you for watching. Good luck.