At the moment we use a relational database for our time-series data, which is suboptimal for doing analyses on the data. We are looking into ADX to replace this setup, to be more optimized for the IoT data that we receive. Currently we have backups in place to be safe for when any disaster or data corruption happens.
My question is, if it is advisable and safe to use ADX as your only datasource. You can use Zone Redundant Storage to reduce risk in losing data. Backups are not really well supported but there are options to extract your data set once per day/week or something. Or is it always advisable that when you do have organisation critical data set that ADX is only your duplication of the data for analysis? I can imagine that it is always better to have it both ways, but that would make it a very costly setup, so I would prefer to be fully dependent on ADX.