Case:
On December 20, 2011, the Data Recovery Center received a consultation phone from the TV Information Center. It probably was that the client user reported that there was a set of 4 plates of the array data in the morning.On the 3rd bright yellow light, the alarm was prompted, and the restarting array was invalid.Subsequently, the after -sales service provider of the Cabinet Cabinet came to test. The preliminary judgment was caused by hard disk hardware failure. It promised to replace the disk, but it could not solve the problem of data recovery.
Solution:
Due to the importance of data, the information center quickly got in touch with our center, and a general communication was made on the status of the data disaster site, and the power was cut off under the guidance of the data recovery engineer to avoid secondary due to error operations. The possibility of destruction ensures the integrity of the scene. Technology () Co., Ltd., as a data recovery service provider specified by Dell (China), responds and arranges senior engineers to go to the scene to check the situation, detect the root cause of the failure, and quickly formulate data rescue solutions according to the actual situation. This array consists of 4 membership disks. The hard disk model is WD10EADS-00L5B1, and a single disk capacity is 1TB. In order to ensure the security of the data, we choose to make the mirror file of 2 good disks, and then analyze and analyze and analyze the image files and then analyze and analyze the image files. The reorganization of data avoids any possible writing operations on the original disk. Due to the hardware failure of the No. 1 and 3, the key to data recovery is how to make these two disks of mirror files. With the efforts of data experts, the mirror file of the No. 1 fault disk was successfully made in less than 4 hours, but the damage of the 5th disk was severely damaged. There was a magnetic head damage, and the image was not particularly complete. In response to this situation, experts give priority to analyzing the underlying structure of the disk mirror file, and judge that the array is a combination of RAID5 level. According to the structural characteristics of the RAID5 array combination, the solution that lacks the reorganization data of No. 5, which is also the scheme, which is also the scheme. It is said that the characteristics of data redundancy are used to calculate the data on the 5 disk disk through the data of the remaining 5 plates. After the data restructuring is completed, 100%recovery.