Use Windows PowerShell to back up a site collection
You can use Windows PowerShell to back up a site collection manually or as part of a script that can be run at scheduled intervals.
To back up a site collection by using Windows PowerShell
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Verify that you meet the following minimum requirements: See Add-SPShellAdmin.
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On the Start menu, click All Programs.
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Click Microsoft SharePoint 2010 Products.
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Click SharePoint 2010 Management Shell.
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At the Windows PowerShell command prompt type the following command:
Backup-SPSite -Identity-Path [-Force] [-NoSiteLock] [-UseSqlSnapshot] [-Verbose] If you want to overwrite a previously used backup file, use theForceparameter. You can use theNoSiteLockparameter to keep the read-only lock from being set on the site collection while it is being backed up. However, using this parameter can allow users to change the site collection while it is being backed up and might lead to possible data corruption during backup.If the database server is running an Enterprise Edition of Microsoft SQL Server, we recommend that you also use theUseSqlSnapshotparameter for more consistent backups. You can also export sites or lists from these snapshots.For more information about using SQL snap-shots, see
For more information, see Backup-SPSite.