Storage Spaces offers simple spaces, mirror spaces, and parity spaces, each with unique characteristics.

  • Simple spaces are designed for increased performance when resiliency isn't very important. They are best suited for temporary data, such as video rendering files, image editor scratch files, and intermediary compiler object files. Simple spaces require a minimum of one physical disk.

  • Parity spaces are designed for capacity efficiency and increased resiliency. Parity spaces are best suited for archival data and streaming media, such as music and videos. This storage layout requires at least three disks to protect you from a single disk failure and at least seven disks to protect you from two disk failures.

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