An Azure service that stores unstructured data in the cloud as blobs.
Hello @Anonymous and welcome back to Microsoft Q&A.
I haven't seen any options in Data Factory for specifying the storage tier during copy. I suspect it defaults to whatever the account storage tier is set to. I never looked closely at this before, so it is worth a test to see whether changing the inferred property affects blobs written by ADF. Actually, there is an easier way. I'll open up storage explorer and inspect the metadata of a few blobs....
.... Yes, looking at existing outputs, it says "Access tier: Hot (inferred)" . So changing the default should affect this.
So while making this change should make all files loaded cool by default, it would not be limited to ADF. Other applications writing without specifying which tier, would also default to cool. This may be something you desire, or maybe not.