I am working with a client who have 10 network drives each of average size of 25 TB . so now we want to migrate all those files from the file Shares to SharePoint online, so can we migrate around 250 TB of data to SharePoint online?

Currently we are planning to upload all the data to a single site collection, and we are planning to use the Microsoft migration tool

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So will this work? or we will face issues since we are going to migrate 250 TB to a single site collection? and if this will not work, then is there any workarounds?


1 Answer 1


Single Site Collections can only be up to 25TB. In addition, 250TB of storage likely exceeds your tenant quota unless you have a significant number of licensed users -- you can purchase more storage from Microsoft. You can see your overall quota in the SharePoint Online admin center.

  • when i access SharePoint admin center i got that i have 1.99 TB available of 2.00 TB.. so does this mean that our tenant can only have 2 TB ? Second question, so what we can do to store more than 25 TB for a single site? Thanks
    – John John
    Jun 19, 2022 at 19:12
  • third question, what is the relation between the number of users and storage quote for SharePoint? i mean can not we purchase as much storage as we want regardless how many users we have?
    – John John
    Jun 19, 2022 at 19:14
  • 2
    You can purchase additional SPO storage as needed, though it is not necessarily cheap. You cannot exceed 25TB content per site. That's a hard limit, for now.
    – user6024
    Jun 19, 2022 at 20:56
  • ok thanks for the info.. so we can store the 250 TB inside SharePoint site this should not be an issue if we purchase the storage.. but the issue will be that we can not store more than 25 TB inside a single site collection,,, so the only option is to split the files over multiple site collections. am i correct?
    – John John
    Jun 19, 2022 at 21:52
  • 1
    Correct, you need to split the content over multiple sites. Jun 19, 2022 at 22:56

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