If you haven't found anything yet, you can take a look at this Kb.
I don't know if it is still relevant or valid for your version.
KBID:
https://kb.netapp.com/app/answers/answer_view/a_id/1030517
Here is the extract of kb:
Note: To start a PS session with SnapCenter server:
Open-SmConnection -SMSbaseurl <snapcenter server URL>
Example: Open-SmConnection -SMSbaseurl https://scserver.com:8146/
1) Create a snapshot:
New-SdSnapshot -path <disk path> -snapshot <snapshot name>
Example:
New-SdSnapshot -path Z:\ -snapshot Test
2) Mount a snapshot:
Mount-SdSnapshot -path <original disk where snapshot was taken> -snapshot <snapshot name> -storagesystem <svm name> -mountpath <clone disk path>
Example:
Mount-SdSnapshot -path Z:\ -snapshot Test -storagesystem svm_snapcenter -mountpath C:\mount1
3) Dismount snapshot:
Dismount-SdSnapshot -path <disk path to be dismounted>
Example:
Dismount-SdSnapShot -path C:\mount1