Manage site collection storage limits

When you sign up for SharePoint Online for Office 365 your tenant will be allocated a quantity of storage space that's based on your number of users. The calculation works like this: 10 GB + 500 MB * number of users. The storage is available to all site collections in the tenant and serves as a central pool from which everyone can draw. You, the global admin, don't need to divvy up storage space or reallocate space based on usage. That's all handled automatically: site collections use what they need when they need it, up to a maximum of 1 terabyte (TB) per site collection. If you find that your storage pool is running low, you can always buy more storage through the SharePoint Online admin center at a cost per gigabyte (GB) per month.

Use the pooled storage model

Important   The pooled storage model will be available by late 2015. If you don't see this functionality in the SharePoint admin center, it will appear there soon.

The pooled storage model is new to SharePoint Online. Existing customers can take advantage of it by setting the storage management option to "auto." When you do, SharePoint Online will disregard any existing limits you had set previously on your site collections and reset them all to 1 TB. New Office 365 customers will have the pooled storage model enabled by default.

Manage storage limits automatically
  1. Sign in to Office 365 with your SharePoint Online admin account.

  2. Go to the SharePoint admin center.

  3. Select settings.

  4. In Site Collection Storage Management, select Auto.

  5. Select OK.

Manage individual site collection storage limits

If you prefer to fine tune the storage space allocated to each site collection, you can set your storage management option to "manual" and specify individual site collection storage limits. In this case, we recommend that you also set an email alert so site collection admins can be notified with their site collections are nearing the storage limit.

Manage storage limits manually
  1. Sign in to Office 365 with your SharePoint Online admin account.

  2. Go to the SharePoint admin center.

  3. Select settings.

  4. In Site Collection Storage Management, select Manual.

  5. Select OK.

Set the storage limit
  1. Sign in to Office 365 with your SharePoint Online admin account.

  2. Go to the SharePoint admin center.

  3. On the Site Collections tab choose one or more site collections.

  4. Select Storage Quota.

    Site Collections tab with Storage Quota button highlighted
  5. In Limit storage quota, enter the maximum number of megabytes to be allocated to each site collection.

  6. Check the box to send email to site collection admins when their site collections are approaching the storage limit. Enter a number from 1 to 100 for the percentage of the limit to reach before an email alert is triggered.

    Set storage quota dialog box
  7. Select Save.

Related topics

SharePoint Online: software boundaries and limits

Applies To: SharePoint Online



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