Case:
Customers use a Dell R720 server, store the bottom layer as two sets of RAID, and one set for RAID1 made of two 300GB SAS disks to install the ESX4.1 virtualization system; one group is RAID5 made of 4 SAS 300GB disks, and the one.Used to store customers’ virtual machines.
Solution:
Due to the failure of multiple disks, the RAID 5 group of RAID collapse was caused. At this time, the ESX4.1 system was normal, but the virtual machine was lost.The engineer put all disk mirrors in a safe storage, and found that a disk had serious physical bad sectors during the mirror process.The engineer analyzed the RAID layer with good mirroring data, analyzed the order of each disk in the original RAID, and the RAID block size and other parameters, using the software to simulate the RAID environment as Dell Raid.This VMFS volume is no longer available.Use the self -developed ESX/ESXi 3/4/5 VMFS file system data recovery software: FROMBYTE Recovery for ESX to extract all virtual machine files:.Everything is normal, the customer conducts detailed detection of the data of an important virtual machine, and the system and the Oracle database are normal.