![]() ![]() Īlthough RAID can be used to back up data from other disks (or arrays) for the purpose of increasing the performance and reliability of the storage, it is NOT meant to be an alternative or substitute for backing up data.ĭata still might get damaged or erased without harm to the disk it’s stored on.įor instance, part of the data may be overwritten as a result of a system malfunction, or the file can become damaged due to an unintentional (or malice) user action. On the other hand, as the use of multiple disks increases the mean time between failures (MTBF), setting up a RAID array also remarkably enhances fault tolerance. RAID improves performance by placing data on multiple disks and thereby allowing input/output operations to overlap in a balanced way. Warning users of potential crashes using the Parity Check function.Keeping the system running in case one of the disks fails to allow time for a replacement, thus ensuring no downtime.Enlarging storage capacity to hold all your data.Increasing fault tolerance, or ability to function after one or several disk failures.RAID arrays grant numerous advantages, and they vary depending on the chosen RAID configuration. In this report, it was argued that an array in RAID redundancy, could be more reliable than any single disk drive.Īccording to Katz, the term inexpensive in the acronym was soon replaced with independent by industry vendors due to the implications of low costs. RAID was first mentioned in 1988 in their technical report named “A Case for Redundant Arrays of Inexpensive Disks (RAID)”. The term itself was coined by David Patterson, Garth Gibson, and Randy Katz. RAID is a technology used to increase the performance and reliability of data storage by combining multiple smaller disks into a single, more capable, device. The actual RAID meaning is Redundant Array of Independent Disks (originally Redundant Array of Inexpensive Disks). Let’s get those RAID levels explained so you can make the best decision for the volume you need to be handled by a RAID array. Depending on the volume, we’ll tell you why you might want to use a RAID 0 disk configuration. There are five main RAID levels (and a few other RAID types not as common). However, the best suiting RAID configuration depends on your data storage needs – and budget. That’s when you need a RAID solution that offers redundancy, which is when you go from a single disk to multiple ones. There comes a time when you run out of space and your computer will work frustratingly slow. ![]()
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