Raid Data RecoveryRAID (Redundant Array of Independent Disks) drives are used for the purpose of storage and quick mirroring of data. The operation of the RAID drives has to be understood if you need to do a quick and effective Raid Data Recovery when there is a failure. Therefore, a swift review of how the RAID drives is seen first before the Raid Data Recovery itself. Every RAID drive will have more than one disk on it. The idea of creating an array of such independent drives is for swift mirroring of one disk on to the other. This would ensure that every write is replicated and updated into the mirror disk. For instance, if there is a drive 1 which is to be replicated, there should be another drive of the same size. This could be your drive 2 which will hold the replicated data. Under normal operating conditions, drive 1 will respond to all queries from the operating system and as far as the operating system is concerned, the entire array will appear as one single disk. When there is a failure the Raid Data Recovery comes into play to ensure that the users are affected to the least. When the drive 1 fails due to some reason, the RAID drive is programmed in such a way that it would switch all the queries which were hitherto going to drive 1 to drive 2. This will ensure that the users do not notice any difference at all. All the drive 1 data will be present on drive 2 since there is an online mirroring of the data as and when it occurred. Therefore, even if the drive 1 where to fail and even if that happens to be a boot disc, the Raid Data Recovery will come into play and make the drive 2 the replacement drive and would boot off that drive. But as far as the operating system is concerned, the RAID drive continues to be the same single entity. The Raid Data Recovery process that has come into play is not recognized by the operating system at all. If the second drive fails in a RAID array, then a warning is sounded and the operator is informed that the mirror is not happening and it should be attended to immediately. Such a failure has to be taken care of without any delay so that future failures are insulated against. Even in the case of drive 1 failure, drive 2 will take over the operation but then the drive 1 should be brought back on stream at the earliest. When the drive 1 is brought back from a short gap in operation or even if drive 2 is brought back to service after an interruption, Raid Data Recovery ensures that the data in both drives are consistent by updating the data first. There will be a parallel update that will ensure the mirroring is perfect between the two discs. |