From the course: Ubuntu Linux: Storage Management

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Create redundant storage with RAID

Create redundant storage with RAID

From the course: Ubuntu Linux: Storage Management

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Create redundant storage with RAID

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- [Narrator] RAID, or a redundant array of independent disks, allows us to configure storage in such a way that data is written to more than one disk in an effort to increase reliability if an underlying disk has a problem. Some RAID configurations are also able to read and write data faster than one individual device. We describe various configurations of RAID arrays, or groups of disks, using a system of numbers. RAID 0, sometimes called RAID Level 0, or striped, spreads one volume across two or more disks. While this has a benefit in terms of available space, if one of the underlying disks experiences a problem, it can cause complete data loss for the whole volume. In a RAID 0 setup, the disks don't need to be the same size. RAID 1, on the other hand, writes the same data to more than one disk, effectively mirroring the disks. This way, if one disk fails, there's still another copy. With RAID 1, the disks need to be the same size. If they're not, the resulting volume size will only…

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