The purpose of the PrivateArk Server service is to make Vault data accessible to components, such as the PVWA, the CPM, the PSM, and the PTA, and handle the requests from the clients and components. The PrivateArk Server service is a Windows service that runs the Vault and communicates with the PrivateArk Database service, which maintains the Vault metadata. The PrivateArk Server service can start automatically or manually depending on the Server’s key configuration. The PrivateArk Server service can also be run in “console” mode for troubleshooting purposes1.

The other options are not the purpose of the PrivateArk Server service, although they may be related to other services or components of the Vault. The Central Policy Manager component is the component that executes password changes, verifications, and reconciliations for the accounts that are managed by the Vault. The Event Notification Engine service is the service that sends email alerts from the Vault, based on predefined events and recipients. The PrivateArk Client is a utility that allows the Vault administrator to access and manage the Vault data, users, groups, policies, and settings. References:

Server Components - CyberArk, section “The PrivateArk Server process (Dbmain)”