Change the storage limits for a site collection

http://technet.microsoft.com/en-us/library/cc263480(v=office.14).aspx

To change the storage limits for a site collection by using Central Administration

1. Verify that you have the following administrative credentials:
   
   • You must be a member of the Farm Administrators group.
2. On the Central Administration home page, click Application Management.
3. On the Application Management page, in the Site Collections section, click Configure quotas and locks.   (SharePoint Site Management >
4. Site Collection Quotas and Locks - MOSS 2007)
5. On the Site Collection and Quota Locks page, ensure that the correct site collection is displayed. If you want to change the site collection, in the Site Collection section, expand the Site Collection list, and then click Change Site Collection. Use the Select Site Collection page to select a site collection.
6. If the site collection currently uses a quota template, do the following to specify an individual quota:
   
   • On the Site Collection Quotas and Locks page, in the Site Quota Information section, expand the Current quota template list, and then select Individual Quota.
7. Leave the Limit site storage to a maximum of check box selected, and then type the new maximum value in megabytes.
8. If you want to send site storage notification e-mail messages to the site collection administrator, select the Send warning e-mail when site storage reaches check box, and then type the value in megabytes.
9. If you want to limit the maximum resource usage points per day for sandboxed solutions, type the new limit in the Limit maximum usage per day to box. The default is 300 points.
10. If you want an e-mail message to be sent to the site collection administrator when the usage per day threshold is reached, select the Send warning e-mail when usage per day reaches check box, and then type the threshold, in points, in the box. The default is 100 points.
11. Click OK.

To change the storage limits for a site collection by using Windows PowerShell

1. Verify that you meet the following minimum requirements: See Add-SPShellAdmin.
2. Click Start, and then click All Programs.
3. Click Microsoft SharePoint 2010 Products.
4. Click SharePoint 2010 Management Shell.
5. At the Windows PowerShell command prompt, type the following command:
   
   Copy

   Set-SPSite -Identity "<Site>" -MaxSize <Limit>
   

   Where:
   
   • <Site> is the URL of the site collection whose storage limits you want to change.
   • <Limit> is the new storage limit for the site collection, in megabytes.
     

     Note:
     The new storage limit overrides the limit set in the quota template that is currently applied to the site collection.

     
     
     For more information about the Set-SPSite cmdlet, see Set-SPSite.
   For information about how to use Windows PowerShell and the SharePoint object model to set the maximum usage per day and the warning level threshold for sandboxed solutions, see "Using Windows PowerShell for Administration" in Chapter 4: Sandboxed Solutions (http://go.microsoft.com/fwlink/p/?LinkId=219528), an excerpt from the book Inside Microsoft SharePoint 2010 on MSDN.