Netaapp data recovery process

Today, I would like to share with you NETAPP The process of data deletion and data recovery , The faulty equipment is NETAPP3210 Storage , It's done RAID, Because the administrator of the computer room accidentally deleted , Leading to the loss of important data , Contact the North Asia technical team , Due to data urgency , North Asia engineers work overtime , Let's take a look at how the engineers of North Asia operated the fault ......

【 User description 】

As described by the user RAID The data recovery case equipment is NETAPP 3210 Storage , The file system is WAFL, The cause of data loss is that the staff misoperation will NETAPP 3210 Delete important data in storage , Urgent RAID Data recovery operations .

【 Recovery process 】

1、 Full backup ： Make a full backup of the original storage device in read-only mode , To ensure the security of raw data .

2、 Analyze backup data ： Analyze the underlying binary data of the backup disk image , Analyze the basic situation of data distribution .

3、 restructuring RAID Group ： According to the distribution of the analyzed data , To calculate the RAID Basic information of the group , And use the self-developed virtual RAID The controller carries out RAID restructuring .

4、 Refactoring logical volumes ： After the reorganization RAID On the basis of Storage Pool The refactoring of , And export the logical volume with data loss .

5、 test WAFL file system ： Yes NETAPP3120 Storage is carried out at the bottom WAFL File system differentiation testing , And analyze the rules of different areas .

6、 analysis WAFL file system ： To write WAFL File system parser , Use the program to control the volume with data loss WAFL File system analysis .

7、 Recover lost data ： Analyze the node index information of the deleted file , Write an index resolver for deleting files , Resolve delete node , Restore delete data .

8、 Data acceptance ： User led detailed verification of the data itself .

9、 Data handover ： Transfer the data as required by the user .