RAID stands for Redundant Array of Independent Disks. Just like in data recovery, this concept encounters problems along the way thus requiring RAID recovery. RAID actually allows end users to have more file space through the use of multiple disks. It has two varieties: a software and a hardware RAID. Before looking in the different recovery methods, it also pays to set the difference between software and hardware RAID. These two are separated by advantages and disadvantages. Take a look at the following facts.
Software versus hardware RAID
Software RAID is one that is dependent on the use of the central processing unit (CPU). It has to share the CPU while other applications are running in the computer. This makes its performance slower than hardware RAID. The good thing about it is that it is cheaper because it does not require the use of any other equipment.
Hardware RAID on the other hand, is made possible with the use of the controller. This device functions very well that even if there is a power failure, RAID recovery is possible. This is the same equipment that makes this type more expensive than software RAID. In choosing between software and hardware RAID, a rule should be followed. Software RAID is highly favorable for CPUs with less extensive programs and applications. Otherwise, investing on hardware RAID is necessary.
Types of RAID arrays
There are different array types for RAID. Each of these types has its own RAID recovery requirements. The following are but two of its classifications:
- RAID 0 array. A RAID 0 array is one that makes use of two disk drives. An example of this type is the use of two drives containing 120GB of memory each. Whenever the 240GB logical volume of this array fails, there is a need for data recovery. RAID recovery will allow the data to be usable again.
- Raid 1 array. This array type is somewhat similar to the concept of RAID 0 array. The difference lies in the fact that RAID 1 copies the entire information contained in the first disk to the second disk. Thus, if failures occurs, retrieving data becomes easier.
There are yet other types of RAID arrays such as the RAID 5 array and the RAID 10 array. Whatever type of array you use, RAID data recovery is only possible with the help of a professional. This is because restoring files from RAID arrays is quite complex.
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