27 May An Informative Guide to Raid Technology
People across the world create a significant amount of data every day. From videos and audio files to emails and documents, we are constantly saving important files on our computers, external hard drives and cloud based networks.
Data storage has therefore become an essential part of everyday life, and one of the best storage options out there is RAID. For those unfamiliar with the RAID, we are offering an informative guide to the innovative technology.
What is RAID?
RAID is an abbreviation of a Redundant Array of Independent Disks, and it is a low-cost data storage technology that is formed from several physical hard drives to create a single unit. RAID is commonly used by many small companies as a server, as it can prevent data loss and can potentially boost computer speed.
What is Redundancy?
You may read the word redundancy throughout the article. This is a form of fault tolerance, which means both the array and data are usable even if one of the drives fail. When considering RAID, you will most likely read or hear about a one or two disk redundancy, which is a reference to the amount of drives that can fail before the technology stops working. Drive failure can happen, so redundancy can be a paramount importance to many companies.
The Most Popular Raid Classifications
The technology can be rather complex in its design and operations, as it can be vulnerable to failure. For this reason, it should never be used as a substitute for a backup. RAID offers different classifications that can determine a system’s performance.
For example, RAID 1 can provide redundancy thanks to its mirroring technology, which allows data to be copied onto two or more hard drives. The mirroring technology can be a curse as much as a gift, because it means a malware infection will also be copied onto the drives and could destroy the data.
RAID 0 has become a popular option because it is thought to be one of the fastest classifications; however, there is a greater risk of losing data. Fortunately, it is possible for RAID technology to continue with some failed parts, but a user may sometimes have no other solution but to request a RAID 0 data recovery. If you are considering using RAID 0 as a server, you should be aware that it is not uncommon for the server to be unable to access the RAID volume – which can cause even the most experienced engineer to scratch his or her head.
Many companies often turn to RAID 5 for its data redundancy and speed. The class also writes data between the disks, whilst distributing parity data throughout all the array’s disks. Parity data is essentially a smaller amount of data that ensures the survival of the array when any drive fails. The classification uses a minimum of three disks, which can improve a computer’s performance exponentially, but it believed to be slower when performing multiple reads on a server.