Hello to all. Site expansion is only possible to join a stand-alone primary site to a CAS, fine. Question:

   1- The expansion can be done just from new CAS installation? It can not be done in a way that the stand-alone primary site will be expanded into a >> existing << CAS hierarchy, right?

   Regards, EEOC.

Yes, it's right.

From technet:

Beginning with System Center 2012 Configuration Manager SP1, you can install a new central administration site as a parent site of an existing stand-alone primary site. This expands your stand-alone primary site into a larger hierarchy that supports the install of additional new primary sites. You can expand only one pre-existing primary site into the new hierarchy because the database of the new central administration site is based on the database of your stand-alone primary site. After this new central administration site installs, you cannot join or expand additional pre-existing primary sites to this same hierarchy. However, you can install new primary sites as child sites below the central administration site.

Yes, it's right.

From technet:

Beginning with System Center 2012 Configuration Manager SP1, you can install a new central administration site as a parent site of an existing stand-alone primary site. This expands your stand-alone primary site into a larger hierarchy that supports the install of additional new primary sites. You can expand only one pre-existing primary site into the new hierarchy because the database of the new central administration site is based on the database of your stand-alone primary site. After this new central administration site installs, you cannot join or expand additional pre-existing primary sites to this same hierarchy. However, you can install new primary sites as child sites below the central administration site.

• Proposed as answer by Xin GuoMicrosoft contingent staff, Moderator 22 hours 42 minutes ago
• Marked as answer by EEOC 16 hours 26 minutes ago

Yes, it's right.

From technet:

Beginning with System Center 2012 Configuration Manager SP1, you can install a new central administration site as a parent site of an existing stand-alone primary site. This expands your stand-alone primary site into a larger hierarchy that supports the install of additional new primary sites. You can expand only one pre-existing primary site into the new hierarchy because the database of the new central administration site is based on the database of your stand-alone primary site. After this new central administration site installs, you cannot join or expand additional pre-existing primary sites to this same hierarchy. However, you can install new primary sites as child sites below the central administration site.

• Proposed as answer by Xin GuoMicrosoft contingent staff, Moderator Monday, March 23, 2015 8:27 AM
• Marked as answer by EEOC Monday, March 23, 2015 2:43 PM

More info:

How To Expand Your Stand-Alone Primary Site With ConfigMgr 2012 SP1

http://blogs.technet.com/b/mspfe/archive/2012/09/14/how-to-expand-your-stand-alone-primary-site-with-configmgr-2012-sp1.aspx

Planning for Sites and Hierarchies in Configuration Manager

https://technet.microsoft.com/en-us/library/gg712681.aspx?f=255&MSPPError=-2147217396#BKMK_PlanSiteExpansion