Hi there,
What exactly is your requirement? I understand you are trying to adjust the cache but there must be some reason behind that.
You can't adjust read/write cache sizes on NetApp - it's dynamic.
You CAN however adjust relative priorities for the cache - what gets cached and what doesn't. Typically useful in large systems and not the 2020.
If you explain what the use case is maybe we can assist more.
Thx
D