One of the leading hospital had a Dell Server crash with RAID 5 Array, which was up & running for about 4 years. 5 hard drives of SAS (Serially attached SATA) interface drives with RAID 5 configuration of 600 GB 15 K RPM drives each was lost due to 2 hard drive failures. Sudden power outage & bad drives caused crash in server. Dell server had RAID 5 architecture, wherein the array can sustain failure of one hard drive, and in hot-spare configuration the drive will be up and running without any issues even after drive failure. More than one hard drive failure would make the server down and unable to sustain further due to loss of parity.
The RAID 5 data recovery is crucial since it contained centralized Tally database, which is important for financial information. The client had immediate requirement of data for day-to-day activity and invoice generation.
The drives were named according to the naming convention in the server. The drives were analyzed. Out of 5 drives one of the drive failed due to firmware related issues and multiple CRC errors or bad sectors. Second hard drive was failed due to physical damages. Our engineers had took up the job on priority and corrections in the firmware were made using our proprietary data recovery equipments. After completing the series of work on the failed drive, the complete disk was imaged bit by bit and was rebuild. The RAID configuration was not successful, since the primary drive failure was physical and then the second drive failed. The physically damaged hard drive was successfully rebuild.
The complete RAID array has to be built without having original configuration details. Our engineers had to perform several permutations and combinations to complete the process. The drives were combined and rebuilt virtually. Complete data was extracted and delivered to the client.
Media: Dell Server with 5 SAS 600 GB RAID 5 Combination.
Recovery Percentage: 100%
Time Taken: 9 Working Days.