Colin - You are (embarrassingly) fast in responding and I'm quite obliged. _/_
On limits, it is quite unambiguous on your documentation. I missed. My bad.
For our IoT applications, the edge devices is in remote location and in an industrial environment where network connectivity and handling is a challenge. There are times where we have two-three days of no connectivity in which case it could be of order of few GBs(extreme case and support estimation).