Have you read the documentation regarding upgrading to SRM 6 located here: Site Recovery Manager 6.0 Documentation Center
That will answer all of you questions, including your one about PSCs. A short summary, you want a PSC for each site. The reason for this is that you want each site to be completely independent from the other.
If you read the docs and still have questions please post them.
thank you for this information, I will take a deeper look at the docs page.
The question here is, if it is better to have a PSC on each site or only a "central" one, but I supose if we will do a InPlace Upgrade it will end up of having a PSC on the main and the DR site
What about the linked mode after the update, will it still work???
Thank you for soem feedback here.
It is better to have one at each site because you want each site to be independent. If the recovery site has to rely on the protected site (or another site) for recovery, it isn't really DR.
Linked mode in vSphere 6 is now called "enhanced linked-mode" and it is much easier to configure and use. You only have to join a PSC to an existing SSO domain to enable enhanced linked mode. More details are available in the docs for vCenter/PSC.