你应该对你通常不需要写入内容的磁盘进行写保护。
You should write-protect all disks that you do not usually need to write to.
因为ZFS从不覆盖数据而是写入到新的位置，所以可以保护较早的数据(但是在不重要的情况下被标记为删除以逆转磁盘空间)。
Because ZFS never overwrites data but instead writes to a new location, older data can be preserved (but in the nominal case is marked for removal to converse disk space).
指定的磁盘具有写保护，无法写入。
The specified disk cannot be written to because it is write protected.
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