CLOUD COMPUTING
DISASTER RECOVERY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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RAID 0
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RAID 1
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RAID 5
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RAID 1 + 0
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Detailed explanation-1: -RAID 0 implements block striping, where data is broken into logical blocks and is striped across several drives. Unlike other RAID levels, there is no facility for redundancy.
Detailed explanation-2: -RAID 0 does not use data redundancy, so the failure of any physical drive in the striped disk set results in the loss of the data on the striped unit and, consequently, the loss of the entire data set stored across the set of striped hard disks.
Detailed explanation-3: -RAID 1 (Mirroring) The point of RAID 1 is primarily for redundancy. If you completely lose a drive, you can still stay up and running off the additional drive. In the event that either drive fails, you can then replace the broken drive with little to no downtime.
Detailed explanation-4: -Unfortunately, RAID 0 lacks data redundancy, ergo, it is not a fault-tolerant array. If one of the disk drives in the array fails, all the data is lost.