Upgrading & migrating Vault is cumbersome and time consuming in replicated environments, requiring product to be offline globally and significant planning. As an implementation grows to involve multiple servers and workstations, the time and complexity involved to install each update manually will increase. In addition to the installation, some updates require the completion of a B2B migration script that updates the SQL database. In a large replicated environment, this is difficult to run since the entire system must be at a steady state. If the script fails, a roll-back option is not available other than a complete restoration of the Vault.
suggested by: Cameron, Joy, Ford, Andritz, Danieli