SharePoint 2013 PowerPivot can now be configured on a standalone server i.e. not part of the farm.
Whilst some may wonder why, this is a big deal from a scalability perspective as that means you can therefore have multiple servers configured to handle increased workload.
A few caveats however:
Reference for installation and Configuration - http://technet.microsoft.com/en-us/library/dn456880(v=office.15).aspx
An interesting thing happened to me whilst moving a Customer of mine's PowerPivot from a SharePoint server to a dedicated server.
This article assumes that you have previously configured PowerPivot and are now simply wanting to move the installation.
Firstly the following is all that is required to move it:
You do not need to re-run the PowerPivot 2013 configuration tool to finalize the move.
IF YOU ARE LIKE ME AND YOU RE-RAN THE POWERPIVOT CONFIG TOOL WITH KERBEROS ALREADY CONFIGURED
The PowerPivot configuration tool succeeds but you receive "file not found" errors when opening the PowerPivot gallery then this small but important note below is for you.
I then looked in the _layouts folder on my SharePoint servers only to find that there was no PowerPivot folder yet the config tool told me it was there.
The fix is actually very simple: (KERBEROS SECURITY WILL BE TEMPORARILY "BROKEN" SO EXPECT SOME DOWNTIME)
You should now see the PowerPivot sub-folder under the _Layouts folder on the SharePoint servers.
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