How to recover data from a failed RAID 5 array?
If a second disk in a RAID 5 disk array fails, the array also fails and its data is not accessible. If a second disk in a RAID level 5 disk array fails, you must replace the failed disks, then delete and recreate the disk array.
What happens when a RAID 5 drive fails?
In a RAID 5 array, you’ll find the data and parity are allocated evenly across the disks contained in the array (they won’t be written to a fixed drive). The data of one of the other data blocks in RAID 5 can be recalculated by the computer using the parity data. That explains why RAID 5 can continue to work after a single drive failure.
How to recover data from a failed RAID disk?
Since you need an uninterrupted power supply for performing the recovery process, A UPS is necessary that can provide power for the HDD dock, router, the backup NAS or PC, and your own computer system. Another unused PC or external HDD dock where the RAID disks that have failed will be connected to a bootable Windows OS.
How is data allocated in RAID 5?
In a RAID 5 array, you’ll find the data and parity are allocated evenly across the disks contained in the array (they won’t be written to a fixed drive). The data of one of the other data blocks in RAID 5 can be recalculated by the computer using the parity data.