Take the backup of Database and configuration and put in the FTP
location. I dont see any option in backup manager in plesk.
You can not take a scheduled backup of databases alone on a Plesk Server separate from the domain content merely using the control panel or even the
pleskbackup cli tool.
You'll need to use mysql tools to dump specific databases and then schedule cron jobs to your liking.
Then there is a setting "Suspend domain until backup task is
completed" If I uncheck will that be a problem?
The problem is that the hosting account tenants can log in and modify files as their files are being backed up. This has the potential to cause funny things if a person is actively modifying files in the same time span as a backup. Imagine if index.html is backed up, and subpage.html is edited before being backed up. Then the user goes and performs an edit on index.html. If a restore is performed, index.html will be "old" but subpage.html will be "new." It will simply be confusing, but no true data loss will be sustained.
Suspending the domain makes it impossible for the user to log in and change their files for the duration of the backup.
Is that a way to get backup of specific database of a domain in
No, you will have to use mysqldump, or a third party tool to get a backup of a specific domain.
I've hit my head against many walls trying to get Plesk 10 to backup servers with any amount of reasonable flexibility. Simply put, it has terrible built-in tools that limit a server administrator's ability to protect customers. The only solution I've found is hacking together my own scripts and using third-party plugins.