NTFS File system is a widely used file system format ,NTFS File system provides data protection and recovery functions , Have stronger security , Basically replaced FAT file system . More and more servers adopt this file system . Let's share with the data recovery engineers in North Asia NTFS The method of reverse operation to recover server data when the partition in the array is formatted due to misoperation of the server device under the file system .
1、 The backup data .
In order to avoid damage to the original data , After receiving the hard disk, the data recovery Engineer in North Asia will mirror all the original data .
2、 Analyze partition size .
View the data in the backup file 0-2 A sector , Find out how many sectors there are in the partition of this server , Then, the data recovery engineer of North Asia follows RAID5 The calculation mode of , Divide the number of sectors by the actual hard disk in the server （ Excluding the calibration disk ） The number of , Get a number of sectors . Then jump directly to the sector , You can find another near this sector GPT Partition table , So you can see the size of the partition .
for example ：6 It's on a plate raid5 array , If the partition size is 1048309759 A sector , When calculating, you should use 1048309759 Divide 5 be equal to 209661951 A sector . The working interface is shown in the figure below (GPT The underlying performance of partitioned table entries , Before tag item 8 Bytes are the starting sector of the partition , after 8 Bytes are the end sector of the partition , Company 512 byte / A sector ,64bit)：
3、 restructuring raid array .
because raid5 The security level of is relatively high , So many companies use... On their own servers raid5 disk array . stay raid5 Under array , Just analyze raid Number of member disks and raid The direction can be reorganized .
This case is NTFS Data recovery under file system , Therefore, you only need to find the file record entry of the partition , Then the North Asia data recovery engineer will according to NTFS In the file system MFT Find... In order raid5 The strip size and raid trend . The following figure is a screenshot of a similar case .
According to the analysis, the data recovery engineer of North Asia RAID Restructuring RAID, You may encounter the loss of file directory structure , The loss of files and directories is shown in the figure below ：
Tips: ：
Yes NTFS Friends who know the file system know , stay NTFS In theory, reformatting under the file system will not have much impact on the data , However, it is also possible to lose the directory structure of some files . Remind users not to rely too much on server data recovery technology , Although the lost server data can be recovered with the help of data recovery technology , But there will be some risks and losses , Always back up regularly , Try to avoid server data loss .
