Introduction to the high watermark of OceanStor 9000 V100R001C20 and V100R001C30

In OceanStor 9000 V100R001C20 and V100R001C30, the default high watermark is that the used space occupies 85% of the total storage space of a node pool. When the used space of a node pool reaches the high watermark, the system reports a capacity insufficiency alarm, but still allows data to be written to the node pool.
By default, the alarm clearance threshold is 5% lower than the high watermark. That is, when the percentage of used space is lower than 80%, the capacity insufficiency alarm is cleared. The alarm threshold and clearance threshold of the high watermark can be manually changed.

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