I got a dedicated server on Arsys Spain, it runs a CentOS 6.8 and the 12.0.18 Plesk version, I just wanna know how secure is to upgrade to 17.0.17 Plesk version?
And while the upgrade its in process does the domains, websites and services (apache, mysql, php, etc...) works? or it stops, and how long time does the upgrade take?
I were look for a guide about this topic, but I didn't find, exist a guide?