Are there any sizing recommendations for the size of disk partition for the PostgreSQL database when using Admin-Diary?
There is no reliable answer as there are too many factors involved. We recommend to use a volume manager like LVM and place the database files (located at
/var/lib/postgresql) in a separate volume.
Thus it should be possible to extend the size if needed.
As starting point a size of 25GB should be sufficient but you need to monitor the usage.