 Hello everybody! Watch this video to find out how to recover data from a crashed RAID 5 after Davy Control DC624 eController breakdown. RAID arrays are an effective method of combining several hard disks into one logical volume to ensure safety and reliability of data storage. A DC624 eController by Davy Control is a reliable device designed to manage RAID arrays. It ensures stable operation on a daily basis, but it may fail one day just like any other device. When the controller is down, the RAID becomes inaccessible and it may result in loss of all important data stored on its hard disks. In today's video, we'll explore what to do if your server's RAID controller breaks down and how to retrieve files from its disks. To understand the controller's functions better, let's find out how to create a RAID on this specific device. Connect the controller to the motherboard, then connect the hard disks to the controller and boot the server. To build an array, open the controller's BIOS. For this specific model, you can do it by pressing the F4 key when the server is booting. As a result, the BIOS will open. Press F1 to create an array. After that, give the RAID settings. The RAID level, the number of disks it should include, the block size, and select the actual hard disks to build the array with. Now choose the build time. The array was copied data, create set and copy data, or create and initialize set. And conform a choice by selecting yes. The RAID should appear in the main BIOS screen. Restart the device. After that, you'll be able to partition the volume and add some data. If the access to your disk array is lost, the first step should be to identify the cause of the problem. Examine the controller and the connected disks carefully. Make them for any damage, signs of corrosion, or overheating on the controller board. Also, have a look at the status LED lights that may also indicate there's a problem. If you notice anything unusual, it may suggest there are some controller issues. If you run a kind of diagnostics and you assure that the controller is out of order and can't be restored, your next step should be to replace the controller. Before doing that, make sure that you have an item of the same model at hand or a compatible one. Replacing the controller with a similar one will preserve the RAID settings and simplify the data recovery process. If you replace the controller with another model, make sure that the new controller supports the same RAID type and RAID level as your old controller does. For replacement, disconnect the disks from the old controller and remove it carefully from the case. After that, install the new one into the same PCI Express slot on the motherboard where the old controller used to be. When the new controller is fixed in place, reconnect all the disks to it. Make sure that you have connected the disks in the same order as they were connected to the old controller. It's a very important aspect for a successful data recovery. When the disks are connected, boot the system and open the controller's settings. The new controller should automatically identify the array and configure it in accordance with the previous settings. If the array doesn't identify automatically, open the settings and try booting the configuration manually. As soon as the controller identifies the array, you should regain access to the data on this RAID. In some cases, replacing the controller might be not enough to recover data, especially when the array was damaged or compromised while used with the forward controller. If the controller is out of order, files were accidentally removed or hard disks were formatted, after run configuration and so on. In all those complicated cases, data recovery from a crash disk RAID requires a specialised software tool capable of rebuilding the RAID and retrieving important information. Hetman RAID Recovery features powerful data recovery algorithms and can cope with various scenarios and data loss including the controller breakdown. This utility supports all popular RAID types, most 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. The recovery tool will automatically rebuild the crashed RAID from the available disks. When you select the array, its brief information will be shown below. If your motherboard has less set-up ports or power connectors than necessary, you can use additional adapters and expansion cards like the ones shown on the screen. Check if the utility managed to rebuild the array properly. To get more detailed information, right-click on the array and open its properties. In the RAID tab, you can view all information about the array including the hard disks, the order, offset and so on. If everything is correct, right-click on the volume and choose Open. After that, select the scan type – File Scan or Full Analysis. If the controller has gels broken down, a file scan is enough and it takes less time. If the program can't find the missing files after the file scan, then go for Full Analysis, go back to the main window, right-click on the volume and choose Analyze again – Full Analysis, specify the file system and click Next. Select the folder where the files for recovery used to be stored. This utility retains the entire file and folder structure, so finding the necessary files is quite easy. In the preview window, you can see the contents of all files. It has also found the files that have been deleted earlier, and they are marked with the right cross. Select all the items you want to recover and hit the Recovery button. Specify where to save the data, choose the Disk and Folder and click Recover again. When the recovery process is complete, you will see all the files in the chosen 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. In such cases, the RAID constructor with the manual build feature will help you. This tool will save the day when the disk beginning is erased, together with the information about the array parameters. This is what typically happens when disks are connected to another controller, and the previous configuration is erased or when the RAID is rebuilt. If you know the array parameters, start the constructor, choose manual mode, next. Specify the array type, block order and size. Add the disk that you used to include, and replace the missing disks with empty drives by clicking the class button. 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 have entered all the parameters you know, you will see your RAID, and if all information is correct, you will see its folders here. Fill in all properties and click Add. After that, the RAID system will appear in the drive manager. Now, start the scan, search for files and recover the ones you need. Data recovery from a RAID system based on a folder controlled by control DC624E is a complicated task, which requires certain knowledge and skills. However, replacing the controller or using a RAID that you recover to, you'll be able to successfully restore the lost files and ensure safety of all your data. And that is all for now. I hope this video was useful, and it helped you to recover the lost files. 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