For this type of data restoration service, a dedicated team of technicians is assigned to do the job as it is a bit complicated and hard to perform. The technicians will continuously work on the hard drive and only get up when your drive is fixed or the entire data is recovered.
This kind of data retrieval service is only offered when there is a very critical situation. The service providers will immediately search and arrange for a team of technicians and send them to do the job; here, the problem is dealt with with immediate priority. The team that is sent to solve the problem comprises the most versatile and efficient technicians as the situation is very much critical and needs good and fast recovery; there is no time to waste or any room to make any mistake.