The Water Level Refers to the Percentage of Total Space

The water level refers to the percentage of total space used in the node pool, including the high water mark and read-only water level. When the Huawei OceanStor 9000 passes the water level threshold to limit the file storage and migration, which of the following description is wrong:

A) When the used space of the node pool reaches a high water level, the system reports an insufficient capacity alarm. By default, the alarm recovery threshold is 5% lower than the water level.  That is, when the used space recovers below 80%, the alarm of insufficient capacity alarm recovery, the alarm threshold and the alarm recovery threshold can be manually modified
B) When the node pool's used space reaches high water level and spill over is selected, the pool of nodes forbids writing data to any other node pool or specified node pool to write data
C) When the node pool's used space reaches high water level and no spill over is selected, the pool of nodes forbids writing data, and does not write data like other node pools
D) When the used space of the node pool reaches the read-only watermark, the system reports an alarm. The alarm recovery threshold defaults to 0% lower than the low watermark, read-only report Police recovery.