Sharepoint Site Collection Limit
According to our project requirements, We need to create more than 2000 subsites under single site collection in SharePoint online (Office 365).
Feb 13, 2018 SharePoint Online Site Collection Limits. To address this, we will increase the SharePoint Online site collection storage limit in the coming weeks from 1 TB to 25 TB. This increased limit will be immediately reflected in the official SharePoint Online boundaries and limits article. Note: this is an increase to the capacity potential. You cannot limit the People Picker on the site-collection level to find only users in a specific organization unit (OU) in a trusted domain in a SharePoint site. Content provided by Microsoft. You want to limit the People Picker control on the site-collection level to find users in a specific organization unit (OU) in a trusted domain.
MSDN article says that you can create Up to 2,000 subsites per site collection.https://support.office.com/en-us/article/SharePoint-Online-software-boundaries-and-limits-8f34ff47-b749-408b-abc0-b605e1f6d498
While this article says that you can create Up to 100,000 subsites per site collection.http://geekswithblogs.net/ThorvaldBoe/archive/2015/12/18/finding-the-maximum-number-of-sub-sites-in-sharepoint-online.aspx
So exactly how many subsites can we create?
Robert Lindgren4 Answers
I tried contacting Microsoft for the same requirement but I found this question is already answered by Microsoft support team.
The reply from Microsoft Team was like
Currently, the sub site limit is 2,000 for Office 365 subscriptions. We can see the limit here: SharePoint Online software boundaries and limits. For any changes, we will update the News in our Office 365 roadmap.
You can find this thread here.
Now the actual point. The article which says that the sub site limit is 100,000 is written on Sep 17,2014 and they say that Microsoft has increased the limit in last 6 month while the Microsoft says its still 2000 on November 20,2015.
So we can't say anything until we personally don't try. The procedure used in this can be used to try and find actual limit. The variation may be due to subscription plan or available storage.
Aakash MauryaAakash MauryaI think 2000 subsite per site collection is just a threshold value.
There will be impact on performance if your subsite count is more than 2000.
Thats why Microsoft recommends upto 2000 subsites per site collection.
Amit KothaAmit KothaThere is no exact number. These are the relevant figures:
2000 - recommended maximum, after which there may be a performance decrease (Both On-Premise and SPOnline). This figure in reality depends on hardware/subscription level.
250000 - hard limit for On-Premise 2013 (There does not appear to be a published hard limit for SP Online)
100000 - hard limit for SharePoint Online as quoted by Metalogix, but there is no other evidence.
Sharepoint Site Collection Limited
I think that the official source is https://support.office.com/en-us/article/sharepoint-online-limits-8f34ff47-b749-408b-abc0-b605e1f6d498and the last updates (August 2018) confirming that the Subsites limit for a single SPO Site Collection is 2000.