Companies responding to federal subpoenas are responsible for costs unless the costs are "significant" and generally cannot charge for data requests under privacy laws.
Federal Magistrate Judge Tony Leung offers a few pointers to lawyers preparing for virtual court hearings via zoom or other video conference apps in the latest Technically Legal Podcast.
Responding to proliferation of electronic evidence, changes to evidence rules will limit the "ancient documents" hearsay exception to pre-1998 documents.
E-discovery is a cooperative party-driven process. Agreement on search terms and methods is important, but that does not mean you get everything you want.