Set Storage Quota for Office 365 Group Site using PowerShell

As you know, Office 365 Group is nothing but a hidden site collection that are not visible in Site Collections view in Office 365 Admin portal. You can only access these site collections by using PowerShell or through URL (https://<tanentname>.sharepoint.com/sites/<group-name>/Shared documents”). Since you can’t view the site in Office 365 Admin portal, the only way set storage size limit is using Powershell. In this article, I am going to write powershel script to set maximum storage size and storage warning level for Office 365 group site.

We can use the SharePoint Online Powershell cmdlet Set-SPOSite to set storage quota and storage warning size limit. Before proceed, run the following command to connect Sharepoint Online powershell module.

Connect-SPOService -Url https://<tanentname>-admin.sharepoint.com -Credential [email protected]

Now, run the following script to set storage quota and warning level.

$StorageQuota= 2048 # 2GB or 2048MB
$WarningLevel = 1800 # 1800MB

$siteUrl ="https://<tanentname>.sharepoint.com/sites/<group-name>"
Set-SPOSite -Identity $siteUrl -StorageQuota $StorageQuota -StorageQuotaWarningLevel $WarningLevel

Set Storage Quota for all Office 365 Groups Site

To set the storage quota for all the Office 365 Groups, first, we need to get sharepoint site url for all the office 365 groups by using Exchange Online cmdlet Get-UnifiedGroup. The following powershell script update storage quota and warning level for all the office 365 groups. You need to replace your own Office 365 tenant name and admin credentials.

$userName ="admin@<tanentname>.onmicrosoft.com" 
$o365Cred = Get-Credential -UserName $userName -Message "Enter Office 365 Admin Credentials"
$o365Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $o365Cred -Authentication Basic -AllowRedirection
Import-PSSession $o365Session

$spoAdminUrl ="https://<tanentname>-admin.sharepoint.com/" 
Connect-SPOService -Url $spoAdminUrl -Credential $o365Cred 

$O365Groups = Get-UnifiedGroup -ResultSize Unlimited

$StorageQuota= 2048 # 2GB or 2048MB
$WarningLevel = 1800 # 1800MB

ForEach ($O365Group in $O365Groups){ 
If($O365Group.SharePointSiteUrl -ne $null) {
$siteUrl = $O365Group.SharePointSiteUrl
Set-SPOSite -Identity $siteUrl -StorageQuota $StorageQuota -StorageQuotaWarningLevel $WarningLevel 
}
}

Once you set the storage quota, you can use the Powershell cmdlet Get-SPOSite to get current storage quota and warning level. The following script list storage quota of all the office 365 groups site.

$O365Groups = Get-UnifiedGroup -ResultSize Unlimited
$CustomResult=@() 
ForEach ($O365Group in $O365Groups){ 
If($O365Group.SharePointSiteUrl -ne $null) 
{ 
   $O365GroupSite=Get-SPOSite -Identity $O365Group.SharePointSiteUrl 
   $CustomResult += [PSCustomObject] @{ 
     GroupName =  $O365Group.DisplayName
     SiteUrl = $O365GroupSite.Url 
     StorageQuota_inGB = $O365GroupSite.StorageQuota/1024
     WarningSize_inGB =  $O365GroupSite.StorageQuotaWarningLevel/1024
     CurrentStorage_inMB = $O365GroupSite.StorageUsageCurrent
  }
}} 
 
$CustomResult | FT