Upgrading and migration?

[scislaghi]

Hello,

I've to migrate and upgrade a server. Now I have psa 7.5 reloaded unedr suse 9.1 .

I've to move to psa 8.


So I've planned to install centos 3.6, reinstall psa 7.5, upgrade to psa8.

But there's then a way to move to centos 4? Or I have to keep an old system?


Also...another solutions?

BTW, plesk always say that I cannot restore a backup of psa 7.5 to a psa 8... but I've tried and works.... can be a solution?

Thanks
Stefano