RAID technology offers multiple hard drives in one single, powerful unit, which is why many companies turn to the data storage system for use as a server. If you are unfamiliar with the technology, it might be helpful to learn that RAID is simply the clever acronym for Redundant Array of Independent Disks, because it features many disks that can improve a system’s redundancy.
What is RAID Redundancy?
Redundancy is essential to data loss, which is why RAID has become so popular over the years, because it provides a combination of multiple hard drives into a single drive that is faster and provides a greater volume. It can therefore boost a device’s speed whilst providing protection against a disk failure, depending on the classification you choose.
For example, as the unit will have more than one component that provide the same storage function as the other, the system will continue to work even if one disk or more fails. Many RAID systems are able to detect a hard disk fault, so it can adjust the operations accordingly, with RAID5 and RAID 1 offering some of the best recovery rates for a drive failure.
RAID can therefore be a superb option for small business who need to protect their critical data against a security breach, data loss or a natural disaster. It is also a viable storage option for people or companies who would like to stream their data from different storage facilities on various networks.
What are RAID Classes?
Different companies may create their own RAID class levels; however, every level will be designed for an exact situation. The RAID class you choose will more than likely be dependent on your storage requirements, but you should also take system performance and RAID redundancy into account before you decide. Fortunately, if you do make the wrong decision, you can often convert the RAID levels. If you want to identify the best array for your storage needs, you can use the RAID calculator to help you get started.
You Must Have a Backup Plan
RAID might provide redundancy options, but it should never be used as a substitute for a backup. Take RAID 4 as the perfect example, because it has mirroring technology that means a corrupted file on one disk will suddenly be mirrored across all the disks – so it is possible you could lose your data. A RAID system could experience a corruption due to a virus, controller problem, software error or an unexpected power outage or surge.What’s more, all the drives could simultaneously fail or you could accidentally delete some data. A backup plan will therefore ensure you still have access to your important files should the RAID technology fail.
So, while RAID redundancy is designed to recover from hard drive faults, it is still prone to data loss – so never underestimate the importance of backing up important documents, photos, videos and files. Anyone who experiences a RAID redundancy data loss should contact a professional recovery expert to help retrieve the lost files.