Which keys are required to be present in order to start the PrivateArk Server service?

The server key and the public recovery key are required to be present in order to start the PrivateArk Server service. The server key opens the Vault, much like the key of a physical Vault. The public recovery key is part of the asymmetric recovery key that enables the Master User to log on to the Vault in case of a disaster. The server key and the public recovery key are usually stored on a removable media, such as a disk or CD, so that they can be safely secured in a physical safe. The recovery private key and the safe key are not needed to start the PrivateArk Server service. The recovery private key is only used for recovery purposes and the safe key is only used to access a specific safe that is defined with an external key. References: Server keys, Server Components