AVM auto extention percentage

Hi Folks,

 

Just wanted to confirm the extent size percentage of FS whenever it reaches the High water mark( HWM) . I read in the document as 5% or 10 GB whichever is greater .But like to make sure will this exact value?

Below is the documents which i referred to

http://www.contourds.com/uploads/file/300-004-148.pdf