Write speed in Storage Spaces

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People note that write speed on mirror or parity volumes in Storage Spaces is slower as compared to a traditional RAID1 or RAID5. Indeed, parity and mirror volumes of Storage Spaces are not identical to a regular RAID1 or RAID5 in terms of maintenance costs. The ReFS driver that manages the filesystem structure on the Storage Spaces volumes must also calculate checksums over data to avoid the write hole issue.

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