SavaPage creates the
/opt/savapage/server/data/encryption.properties file
at first installation. The encryption keys held in this file are used to store Encrypted Secrets and Document Signatures in the
database.
Make a backup of this file now, and store it at a secure place, so you can restore it when you need to migrate to a new server.
The encryption.properties file is
crucial for decrypting secret data in the database
and verifying the authenticity of document signatures. When you lose this
file you won't be able to use any database copy which was based on its
encryption keys ever.