As the PKI Hub database, you can use one of the following:

• A third-party database that meets the PKI Hub database requirements.
• A PKI DB Appliance configured as follows.
  • Installing PKI DB Appliance
  • Running PKI DB Appliance
  • Initializing CSP DB Appliance
  • Replacing the TLS certificate of a PKI DB Appliance node
  • Replacing the secroot password
  • Creating a PKI DB Appliance cluster
  • Checking node status
  • Rebooting a node 
  • Removing a node