Level of Complexity of Data Recovery in RAID System
Learn why recovering RAID is one of the most difficult and complex services of a data recovery company with a summary of how the service runs.
RAID data recovery involves numerous hardware-level variables, file system, RAID type, and various controller models that work with different algorithms. The combination of these factors means that there are hundreds or thousands of different combinations of how data is written to the array.
Causes of loss of RAID data
Damage to one or more disks in the array, RAID controller burned, disk reboot, unfinished rebuild, hardware damage (NAS, Storage, Server), loss of RAID configuration, etc.
If one or more disks (HD or SSD) are damaged, you will need to clone or repair them first. Whenever possible a clone is made from each of the drives to preserve the integrity of the original devices.
With a sufficient number of accessible disks to rebuild the lost RAID array, the specialist will need to be fully aware of the hardware and software details used. It should understand how the algorithms of RAID controllers that segment the data in small blocks work by recording them sequentially on each of the array’s component disks.
With the right technology and knowledge, it will then be possible to virtually rebuild the RAID array with the algorithm on the original controller board. Normally in this step a volume binary image will be created, on which the following procedures will be done.
If there are VMware, Hyper-V virtual machines, there will be an additional layer of complexity when retrieving data from this type of system. You will need to extract the VMs, rebuild the existing file system on the virtual machines, and only then recover the data.
The number of files written to a RAID system is another important variable. There are cases where more than 150 million files needed to be recovered. Even using a robust machine with 64 GB of memory and 16 TB of storage space, the processing of this particular job took 30 days to complete.
This often causes the RAID recovery attempt to be extremely complex and time-consuming, depending on the number of disks and the size of the array. However, in most cases, data can be recovered.
RAID systems are widely used for critical applications within a company, and their restoration as quickly as possible is always desired. Only a few companies have the expertise, technology and equipment required for this type of challenge. Opt for a RAID data recovery service at https://www.salvagedata.com/raid-data-recovery-nyc-ny/ having latest technology.