The answer depends on the type of RAID you want.
问题取决于你想要的RAID类型。
The space will also be affected by the type of RAID-Z configuration required (more on this in the RAID-Z Options section).
空间还会受到所需RAID - Z配置类型的影响(在RAID - z选项一节中，有更多关于这方面的介绍)。
RAID-Z is not the only type of disk array available to ZFS. Mirrors are usually faster and less memory-consuming, but require equal Numbers of hard drives to use it.
RAID - Z不是唯一可用于ZFS的磁盘阵列类型，镜像速度通常更快且消耗的内存更少，但需要等量的硬盘驱动器才能使用它。
RAID-Z is not the only type of disk array available to ZFS. Mirrors are usually faster and less memory-consuming, but require equal Numbers of hard drives to use it.
RAID - Z不是唯一可用于ZFS的磁盘阵列类型，镜像速度通常更快且消耗的内存更少，但需要等量的硬盘驱动器才能使用它。
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