Case:
A Dell PowerVault MD3000I server with an operating system is linux, with 15*1TB hard disks, of which 13 are formed RAID5, and the other 2 are hot disks. Due to the damage to the No. 7, 9, 11 hard disk, the entire database cannot access the entire database.Essence
Solution:
The engineer mirrored all disks, and found that three disks had physical bad tracts. Through special devices, the data was maximized.The underlying analysis was performed, and the 0-12 disk was obtained as a set of RAID5 arrays, and the 13 and No. 14 disk were the heat preparation.Limit No. 7 is the earliest offline, and the top of the thirteenth is on the top of the market. Limit No. 9 and 11 is damaged at the same time, causing RAID to collapse.According to the analysis of the original RAID parameters, reorganize RAID and repair the Windows system.Use the normal Windows system file to replace the Windows system file in the damaged RAID, and then the mirror back to the customer to use the new disk to make a new RAID, start the server, and enter the system, but one is normal.Verify key data-database data to return to normal.