ONTAP 9 Manuals ( CA08871-402 )

Any application that has write-cached data can lose that data under the following set of circumstances:

The cache itself does not have any error handling—​the applications do. When the application makes a write to the cache, the write is always completed. If the cache, in turn, makes a write to the target system over a network, it must assume that the write is completed because if it does not, the data is lost.