Exchange 2016 limits.
Some limits of exchange 2016 I gathered:

(post comment if you find more)

  • Memory Per Exchange Server Instance 96 GB (VMware best practice guide)
  • Number of CPUs per Exchange Server Instance 24 (VMware best practice guide)
  • Exchange Server 2016 Standard Edition – maximum of 5 mounted databases per server
  • Exchange Server 2016 Enterprise Edition – maximum of 100 mounted databases per server
  • Maximum size of Exchange Mailbox database is 16 TB (Microsoft recommends 2TB / mailbox database)
  • DAGs can have up to 16 members, and each member is limited by the edition of Exchange Server 2016 that is installed