Redundant array of independent disks

There is a need for the disk setup on servers to provide redundancy; this is where if one disk fails, the data is still available. We have already looked at failover clustering in Chapter 5, Understanding Network Components, where two servers share a quorum disk—the single point of failure in that scenario would be the shared disk. We are going to look at different Redundant Array of Independent Disks (RAID) levels and their characteristics:

  • RAID 0: RAID 0 uses a minimum of two disks with a maximum of 32 disks:
Figure 10: RAID 0

This is known as a stripe set, as the data is written across Disks 1-3 in ...

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