This is the wiki page giving some details about the different databases.

Note: information_schema, log, mysql, and test are MySQL databases.

Host	Database name	Replication host	Manager
ippc02	gpc1	-	Slave
ippc17	ippRequestServer	ippc19	*
ippc19	ippRequestServer	-	Slave
ippdb00	nebulous	ippdb02	*
ippdb01	gpc1	ippc02,ippdb02	*
ippdb01	ippadmin	ipp001,ippdb02	*
ippdb01	isp	ippdb02	Heather
ippdb01	czardb	ippdb02	Roy
ippdb01	ippToPsps		Roy (Obsolete?)
ippdb01	ipptopsps		Roy (Current?)
ippdb01	detection_efficiency		Bill
ippdb01	Rw10BH96		Bill
ippdb02:3306	nebulous	-	Slave
ippdb02:3307	gpc1,czardb,isp,ippadmin	-	Slave

Note: Databases on ipp001 are not shown (development cluster).

Other:

Host	Database name	Replication host	Manager
ippdb01	MD01
ippdb01	MD02
ippdb01	MD03
ippdb01	MD04
ippdb01	beaumont
ippdb01	eamtest

Backup policy is defined here.