Case:
In the night of December 2011, the data center of the city X Hospital was received.The customer describes the array consisting of 6 membership disks. The hard disk model is Fujitsu MBD2300RC, a single disk capacity of 300g, and the SAS interface.In order to ensure the security of the data, we chose to make the mirror files of the 6 member disk, and then analyze the reorganization of the image file and avoid any possible writing operations on the original disk.Due to the hardware failure of the No. 1 and 5, the key to data recovery is how to make these two disks mirror files.
Solution:
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 reorganization is completed, the virtual array combination is combined to a complete image on a large -capacity disk. The three partition data of the customer is fully displayed. The directory structure is completely consistent with the data before the data is lost. The SQL2005 database is successfully attached and the data verification is successful.