Centos software raid degraded

This is required to auto-build your RAID devices at boot. To list the options to create RAID device with mdadm use the —help option. There are several options when creating RAID with mdadm. I will be listing few important ones. Linear mode — Two or more disks are combined into one physical device.

But if several users use the device, several users using different disks at same time, you will see a performance gain. Once one of the hard drives is failed, all the data on the RAID 0 array will get lost and become inaccessible. You should stop writing data on the disk and try data recovery. You can ask a professional disk array data recovery company for help or try data recovery RAID 0 with a professional data recovery tool.

Here I recommend MiniTool Partition Wizard, a reliable and easy-to-use program for disk management and data recovery. Step 1 : Prepare an external hard drive and connect it to your computer. It will be used to store the recovered data later.

Then install this tool and launch it. Free Download. Step 4 : In the pop-up window, select the device to recover and click the Scan button. You can select either the volume that stores the lost data under the Logical Drive section or the disk that is marked as degraded under the Hard Disk section. Step 5 : Wait until the scanning process is finished. Then find and check needed files or folders. You can select a file and click the Preview button to identify it. After checking all the needed files, click the Save button and select a location on your external hard drive to save them.

Then you can copy the data back to the RAID array and keep the files on the external hard drive as a backup. Hard drive failures usually are the most common cause of RAID array failures.

What is RAID degraded? How to fix RAID status degraded. Here is a detailed tutorial. Click to tweet. What can you do to solve the problem when you see RAID status degraded? This post provides a detailed guide for you.

You can share your ideas with us by posting them in the comment section below. For any problems with MiniTool Partition Wizard, you can contact us via [email protected].

Download Partition Wizard. They are fragile parts and it might lead to further physical damage if you drop or throw your disk mistakenly. Maybe there is a degradation situation. Also, verify the file system integrity. Post by aks » Wed Feb 03, pm Okay, error is [ 2. The boot environment of sdb is wrong. I'm assuming md is the boot raid. It works with sda and not sdb then sdb is wrong!

What happens if you remove sdb and attempt to boot only from sda? Intel put that there for Windows people. Additionally, enabling the Intel fake RAID now makes your system dependent on Intel hardware for failover booting or possibly booting in general. And for recovery, you may only have access to a Sparc station and I don't wish that on anyone , but that could happen. Thanks, Bob. Post by pvanthony » Thu Feb 04, am aks wrote: Okay, error is [ 2. Board index All times are UTC.