How does the RAID5 achieve data recovery?

RAID5 due to the relatively few failures and their own strong fault tolerance, often makes the network managers do not pay much attention to data backup, which caused the raid failure when the data loss often caused a great loss. So, in the absence of backup, how is RAID5 data recovery?
First, let's take a look at what is RAID5. RAID 5 is a storage solution that combines storage performance, data security, and storage costs. You can understand RAID 5 as a compromise between RAID 0 and RAID 1. RAID 5 can provide data security for the system, but the level of protection is lower than mirror and disk space utilization is higher than mirror.
How is the RAID5 data restored? After the array is lost, the data recovery engineer looks at the existing information on the hard disk, calculates and finds the original disk, block size and other related information, and manually simulates the original creation of the array state to read all the data. Therefore, if the RAID5 data is lost after the rebuild reorganization operation, then the original array information will no longer exist, will not be able to calculate the original parameters, so that the data will not be recoverable, conversely, if not rebuild reorganization and other related operations, RAID5 data recovery can reach almost 100% Success.
In order to achieve a higher rate of data recovery, first of all, to protect the first scene, do nothing. In addition, even simple test operations may cause later data recovery inconvenience. In the case of normal RAID5 recovery, when the hard disk is damaged beyond fault tolerance, the image of the damaged hard disk must be fully extracted for final recovery. And if frequently on the hard disk power, it is easy to cause the head further fatigue damage, and even scratched the disc. The correct approach should be to immediately consult the Professional data Recovery Center, such as the Shanghai Day Shield Data Recovery Center.
Many cases of data recovery failures are due to the user taking an incorrect workaround after data loss. For example, server users rely on after-sales service if not professional, RAID disk array problems after the easy choice of reconstruction, data loss will become worse. In Shanghai, the Day Shield Data Recovery Center can provide the most professional RAID5 data recovery services and other data recovery services, all-day free service hotline to solve various data recovery challenges.

How does the RAID5 achieve data recovery?