Shulou(Shulou.com)05/31 Report--

This article mainly explains "how to recover the data lost in raid". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to recover the data lost in raid.

[server data recovery failure description]

What we share today is a successful case of server data recovery. the failure of the server that needs data recovery is the loss of raid information, the server model is a brand 380 series server, the server is installed with multiple hard drives to form a riad5 array for storage, and the file types stored in the server are ordinary files, and the server is accidentally powered off under normal working conditions. After restarting the server, the administrator found that the raid information in the server was lost and the server could not be used.

[server data recovery analysis]

According to the server failure process described by the customer, it is inferred that the server raid module damage is caused by an unexpected power outage, and the loss of raid information in this case is a case of raid module damage. After the raid module that fades out under normal circumstances is damaged, the data in the original server can be recovered by means of data recovery.

[server data recovery process]

In this data recovery case, the server failure should be caused by an unexpected power outage, and the hard disk has no physical failure, but according to the standard process of server data recovery, all the hard drives in the server that need data recovery must be physically tested. After the data recovery engineer checked the hard disk of the server, it was confirmed that the hard disk in the server was read normally and there was no physical failure. This server data recovery does not require hardware repair.

Since the physical hard disk does not need to be repaired in this server data recovery case, the first step of data recovery is mirroring operation, and the server data recovery engineer mirrors the data in the server to the safe storage of data recovery. later data recovery work will be carried out in the data recovery storage.

The server data recovery engineer analyzed the raid structure of the mirrored data, and obtained the necessary data for reorganizing the array, such as the arrangement order of the raid array hard disk, the array verification mode, the hard disk block size and so on, and then reconstructed a group of raid arrays based on the data obtained from these analyses.

After the analysis and calculation of the server data recovery engineers, the information used to reorganize the raid array is obtained. The data recovery engineers use this information to reconstruct a set of raid arrays in the data recovery storage device and carry out logical verification. Soon the logical verification passes, and all the parameters are correct.

The data recovery engineer brings the recovered data to the customer for verification, and the customer verifies that the data in the original server is complete and correct. The data recovery engineer is responsible for handing over the recovered data to the new server prepared by the customer. This data recovery is a complete success.

At this point, I believe you have a deeper understanding of "how to recover the lost data of raid information". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.