Redundant array of independent disks (RAID) was created 20 plus years ago; it is not as easy to choose the correct level of a RAID to use for your organization. Although most people perceive that since redundancy is inbuilt there is no need of backing up data or recovering data but this is a wrong perception. RAID is defined as storage volume made up of many discrete hard disks and also is a definition of the way data gets displayed to the users. Hard drives used for this type of storage are S-ATA, SCSI, SAS or IDE drives. These hard drives are then plugged into a controller for configuration and the controller could be a controller unit designed for RAID devices, a card in a computer or stand-alone enclosure.
The choice is dependent on the quality of service and economics, capacity, availability, performance and other requirements of the service. Below is a guide for beginners who intend to use RAID for storage purposes:
How the systems protect application data
RAID is so popular in most storage systems. Although it is omnipresent, its technology is not considered as up to date like before. RAID however still stands for use for the sophisticated market of storage as it gathers, rely on and save much data although the risk of losing and consequences of losing the data increase. New technologies of storage come each time and RAID has since evolved with such. Other vendors considered coming up with RAID-post products.
Levels of RAID
When considering using RAID type of storage, you need to keep in mind performance factors. RAID has 6 levels and others combined by the array storage vendors. To choose the right level to use you consider, the type of the application data, the users to make use of it and the data criticality. For instance, data requiring less write activity, reduced costs and good read performance, you will need to use level 5 which best fits the data. For business, RAID level 6 works best.