Retention label storage growth modeling and how to minimize storage growth by excluding file ext.

Hi there,

has there any modeling been done at what rate OneDrive/SPO and EXO storage would grow by applying a 10 year Retention Policy to all these Services?

Is this managable at all? Should I monitor it over time and Can i expect a significant growth / additional cost?

Further, would it be possible to exclude Video, Audio and some other large file extensions from the retention? I could not find anything documented or on the UI but did not yet look into PowerShell possibilities...

Thanks,
Franck