Instance disk array Data recovery method

In RAID array data recovery, we often encounter simple structure such as RAID1, RAID0, RAID5 and so on array data recovery, such array data recovery is generally difficult, the data recovery success rate is higher. However, when encountering complex structure of array type, such as composite array structure raid0+1, raid1+0, raid5+0, raid3+0, RAID6, raid5e, Raid5ee and so on, this kind of array data recovery is relatively difficult.

If my Shanghai day Shield Data Recovery Center has encountered a group of 4 hard disk RAID0, not a simple block concatenation, but a long block combination of the law, and the RAID5 type also has the HP RAID5 dual loop derived from the more complex disk array type, and some data out of sync, The data cannot be read correctly after the reorganization.

In the days before my Shanghai Shield Data Recovery Center encountered the raid5+0 array data recovery, not only structurally different from the previous RAID5 array, but also in the array of data recovery process is very different, but after our Shanghai Day Shield Data Recovery Center several data recovery engineer "consultation", Or the successful recovery of this complex RAID array data, and the success rate is quite high. Now, take this array of data recovery experience as an example, to discuss with you this kind of composite RAID array data recovery method.

Complex RAID array data recovery requires data recovery engineers with extensive experience in data recovery

The RAID array I received was comprised of 5 Hitachi SATA hard Drives, of which 3 were 36GB and the other 2 were 72GB, all using the Linux operating system and were initially identified as RAID 5 array types.

The test found that one of the hard disk has a firmware problem, the remaining 4 hard drives have different degrees of bad sectors. First, use the day Shield Professional HDD Repair tool to write back to the hard drive that has a firmware failure. In order to avoid the proliferation of bad sectors, the data in 5 hard drives is mirrored into files through the day Shield data Recovery compass, then the image file is manually analyzed and reorganized using the day Shield Data recovery compass and winhex.

During the analysis, we analyzed the image files according to the RAID5 pattern, but found that the data of 2 hard disks and the data of the other 3 hard disks were not related to each other, which was suspected to be an error in array type locating. Attempts to eliminate two of these hard drives, only the other 3 drives are RAID5 array analysis, after an attempt, 3 hard drive data combination successfully, and successfully exported the required data. What about the remaining two disks? After independent analysis, it was found that the two hard drives have been re-formed into another RAID0 array, completely unrelated to the previous RAID5. Such a composite RAID 5+0 array Data recovery is finally fully restored, the sense of achievement is self-evident.

It should be noted that in the RAID array data recovery, we should first reasonable analysis of the server array drive data, determine the RAID array structure type, to save the RAID array data recovery time. On the other hand, when encountering complex array data recovery, we should use professional array data Recovery tool, do not download some free data recovery software on-line to avoid the permanent loss of server data. In the case of RAID array failure, it is best to work under the guidance of professional data recovery engineering or directly seek the help of professional data recovery agencies, so as to avoid irreversible losses.

Summary: In the face of these endless complex array, must have a solid foundation of data recovery theory as a support, know the various systems of various arrays of the underlying structure characteristics, and have a certain research and development capabilities, innovative to analyze it. To do array data recovery is generally used by the underlying data recovery software for manual analysis, because the manual analysis of the information is credible, you can know which hard disk data is invalid, to ensure that the recovered data is correct.

If there is any doubt about the matter, please contact: tel:13122808298 qq:4000076365 Data Recovery Center: http://www.tianduntech.com/Address: Shanghai Baoshan District Luxiang Road 111 Lane Greenland 1th Building 1210 Room

Instance disk array Data recovery method