Linking Office 365 Sharepoint Document library to on-prem Sharepoint

[Martin Gudel]

Dear all, 

I found a similar question to my current one https://techcommunity.microsoft.com/t5/Microsoft-Teams-AMA/Linking-Teams-to-pre-existing-OneDrive-Do... , but I didn't recognizeexactly the definitive answer to it.

My companies C-Levels agreed to implement Microsoft Teams. The only drawback is that commercial correspondence must still be stored in an already existing on-prem Sharepoint.  As far es I understood the concept of Microosft Teams and Office 365 Groups, the Sharepoint Document library part for the Office 365 Group can only and only get configured in Sharepoint Online.

Is this still correct? or: is there any way to configure the  Office 365 Group to use an on-prem

Sharepoint here? (please put an RTFM with the corresponding link to the reply section, if possible)

So far, so good. If I create subfolders in the Files tab, it does not store that in the  Office 365 Group Sharepoint document library. Instead, Teams manages to link additional Sharepoint Online document libraries. As far as I found this in MSFT docs, this also can only and only be linked to Sharepoint Online document libraries, so even the Sharepoint document libraries still will be stored in Sharepoint Online.

Is this still correct? or: is there any way to configure the  Office 365 Group subfolder library links to use an on-prem Sharepoint here? (again, please put an RTFM with the corresponding link to the reply section, if possible)

What I'm trying to achieve is to create additional folders in the Group and link them to the on-prem Sharepoint, so the consultant and technical stuff, and some more files, can still be stored in Sharepoint Online while I can template folders (created by a template or script) which are linked to Sharepoint on-prem for the commercial correspondence. If I cannot prevent users from storing documents in the Files section root, I will add a Flow, logic app or similar to move that content to a corresponding library.

Unfortunately, I didn't find a configuration item for Microsoft Teams or the Office 365 Group to manage the link which is used to connect the Group subfolder to the Sharepoint document library.

Can you please help me where I can find guidance to manage the link and configure it to use the on-prem  document library?

I appreciate your RTFM with a corresponding link!

Regards, 
Martin

[#2]

Teams are built on top of Office 365 Groups, EXO and SPO and to have them 100 % functional you need these three key blocks. Saying that, your requirement is not very esasy to accomplish since you want be able to control if your users store documents in SPO or in SP OnPrem assuming you can add access to your SP OnPrem by means of a Web Site Tab

[#3]

Hi Juan,

thank you for your response. This is one of the key concepts that I need to fully understand.

I already know that Teams are based on Office 365 Groups and I can add additional Tabs for my on-prem Sharepoint as explained in https://blogs.technet.microsoft.com/skypehybridguy/2017/10/28/microsoft-teams-use-an-existing-sharep... .

At the same time, https://docs.microsoft.com/en-us/microsoftteams/office-365-groups explains a little more in depth how Office 365 Groups are used for the Sharepoint document library in Office 365 Groups. That article states "more importantly, if you create your own folder structure within a document library it does not propagate to Teams as a channel; for now, it only flows from Teams into SharePoint." and you can see in Sharepoint Online, that the group links a new Sharepoint Online document library. 

For my current understanding that means that there is some API where I propagate which "Sharepoint" shall be used, as - at least in my current understanding -  the group-to-sharepoint link requires some information which Sharepoint document library to use. 

How can I get access to that, so I can use my own links to my on-prem Sharepoint for the group?

Is this feature documented somewhere?

Thank you for your comments, esp. if there is a statement taht this is not accessible and/oder cannot be configured by a customer.

Regards,

Martin

[#4]

Dear Martin,

Did you manage to link a SP on-premise library in an online team site?

Best

[#5]

No. What it's saying is this. When you create a new channel in the Team, it creates a new Golden in the default Document Library for that Team for storing documents dropped into that channel. However creating a new Folder manually in the Document Library will not create a new channel in the Team.