RAID, also known as Redundant Array of Independent Disks) is a technology used for storing data in blocks across multiple disks to achieve greater access speed and redundancy, also known as data striping. The disks by means of a RAID software or RAID hardware controller then control the parity and access to the drives, presenting it as a single volume of storage space, which can be partitioned in many unique ways or for a number of logical drives. Not only do you get greater access and redundancy (provided the correct RAID level is chosen), capacities of storage can be increased into the Petabytes. RAID devices (except for RAID 0) are considered to be fault tolerant but the individual hard drives or solid state drives are not immune to failure. Also hardware and software are prone to any form of voltage, power failure, caching issue, or even in unlikely events leads to corruption from any of the below causes, which are rare: • RAID controller failure • RAID configuration lost • Accidental reconfiguration, deletion of the RAID • Multiple disk failures on the RAID array. • RAID partition loss • Virus attacks • Virtual disk corruption or lock. (caused by memory caching, power issues in most cases) For rebuilding the raid array, you would need the help of RAID data recovery experts. Our experts would extract the data from the corrupted array and reconstruct the data in the identical way as it was done before. Any of the above scenarios will result in data being lost and require a data recovery. Such recoveries are complex; however, CSSI has had a near 100% success in recovery of every single RAID to date. This is primarily due to its own research and development labs, engineers on hand and constant real time work with development engineers on live recoveries where required.
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