This is a solution where several physical hard disks (two or more) are governed by a unit called RAID controller, which turns them into a single, cohesive data storage block.
这是几个物理硬盘(两个或更多)有一个称为RAID的单元的管理的解决方法，它把他们变成了单一的、结合一体的数据存储块。
The storage target validates the CRC and Ref tag and, if correct, stores both the data block and DIF on the physical media.
存储目标检查CRC和Ref标签，如果正确，就在物理介质上存储数据块和DIF。
Updates each page of the block so that it appears empty (the physical data remains, but their slot directory entries are set to deleted).
更新块中的每个页，使之看上去为空(物理数据仍然在，但是它们的slot目录项被设为已删除)。
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