When you create a new Virtual Machine you can place it on different kind of storage.
Each storage is datacenter geolocalized :
SIB for SIBELGA DC – ART for ARTS DC
GOLD : SSD Ultra Fast Storage for high Input/Output.
SILVER : SAS Storage made for big volume data.
AUTO* : Balanced Storage with a mix of Gold & Silver volumes.
STRETCH* : Balanced Storage on two Data Centers.
* There is some new dedicated storage policies depending on services requested.
You can mix different types on one VM directly :
Ex: Windows 2016 C: Drive (GOLD) – Window 2016 D: Drive (Silver)
You can change storage policies without downtime !