The DB is being used to store market quotes, so that losing data of one day is acceptable.
All writing operations are performed at a fixed time of a day, serially, by single connection.
The incrementing amount of data is about 2GB every day.
Because of the budget cutting, the physical storing device had to be changed to a traditional hard disk, from a SSD, and the writing time changed to 2+ hours from 10 minutes.
How should I tune my PG configuration, for writing, especitally with a traditional hard disk?
Env:Ubuntu server 20.04, Postgresql-11, CPU 4 core, RAM 8G, nothing else needs to be done when writing.