HP UPD - System Administrator's Guide HP UPD 5.6.5

Update server/replace server
This section applies to print server deployments only.
Update server
When considering an update to a operating production server, it is strongly advised to set up a test server
and perform the initial upgrade and testing on the test server.
Create a test server?
The procedure for a clean start is similar to replacing an existing server.
Replace server–clean start
Get queue and port information from the old server.
ENWW Update server/replace server 225