You have a SharePoint Server 2010 Service Pack 1 (SP1) server farm. You need to back up the
contents of a custom list every day. The solution must minimize the size of the backup. What should
you do?

A.
From Central Administration, click Performa site collection backup.

B.
From Central Administration, click Perform a backup.

C.
Create a scheduled task that runs the backup-spsite cmdlet.

D.
Create a scheduled task that runs the export-spweb cmdlet.

Explanation:
The Export-SPWeb cmdlet exports a site, list, or library. The capability to export from a library is a
new feature in SharePoint 2010 Products.
Granular backup operations
Backing up a Site Collection
You can backup a specific site collection using either Central Administrator or Powershell.
Using Central Administrator
Select Backup and Restore
From the UI select Perform a site collection backup
Select the appropriate site collection from the pull down menu
Include proper UNC path including backup file named like: filename.bak
Selecting Start backup redirects to _admin/sitebackuporexportstatus.aspx page.

Using Powershell backup-spsite -identity http://contosoweb -path\\server\backupshare\bufile.bak
Backing up a Site, Library, or List
Exporting a Site/sub-site
Export a specific site using Central Administrator:
1. Select Backup and Restore
2. From the UI select Export a site or list
3. Select Site Collection\Site “leave list drop down clear”
4. Optional categories is to export full security or export versioning history
5. Selecting Start export redirects to _admin/sitebackuporexportstatus.aspx page.
Using Powershell export-spweb -identity http://contosoweb -path \\servershare\bu\site.cmp
Export a specific list or library:
1. Select Backup and Restore
2. From the UI select Export a site or list
3. Select Site Collection\Site
4. Select a list
5. Optional categories “export full security or export versioning history”
6. Selecting Start export redirects to _admin/sitebackuporexportstatus.aspx page.
Using Powershell export-spweb -identity http://contosoweb –
path\\servershare\bu\hrpowershell.cmp -itemurl /cake
Note: This example demonstrates exporting a document library named cake from Contosoweb site.
Backup & Restore Sites in SharePoint 2010
Let’s take a closer look at backup and sestore. When working with sites, we can use the ExportSPWeb cmdlet to export a site:
PS > Export-SPWeb -Identity http://SPServer/NewSite `
>> -Path C:\Backup\spWebBackup.bak
This example exports an entire site to a backup file. It is also possible to export specific content from
a subsite, such as lists, document libraries, and list items. You use the ItemUrl parameter to export
lists or list items from a subsite. Here is an example of exporting a list called Calendar from a site:
PS > Export-SPWeb -Identity http://SPServer/NewSite `
>> -ItemUrl “Lists/Calendar” -Path C:\Backup\spWebCalendar.bak
The Export-SPWeb cmdlet also supports the IncludeUserSecurity switch parameter, which allows you
to include access control lists for all items. By default, Export-SPWeb exports the last major version
of a list item, but you can change this by setting the IncludeVersions parameter to include the
current version, last major and minor version, or all versions of each item.
After you have an export file, you can use the Import-SPWeb cmdlet to import it into a subsite.
Importing a subsite works as long as you specify a site collection that contains a matching template;
otherwise, an error occurs:
PS > Import-SPWeb -Identity http://SPServer/NewSite -Path C:\Backup\spWebCalendar.bak
The Import-SPWeb cmdlet also supports the UpdateVersions parameter, which allows you to specify
how to handle items that already exist in a list. The possible values are Append, Overwrite, and
Ignore.
Remove Sites in SharePoint 2010
Finally, let’s take a look at how to remove an existing site. The Remove-SPWeb cmdlet removes a
specific site from SharePoint 2010. If the top-level site is deleted, the site collection is also removed.
Here is an example of running this cmdlet:
PS > Remove-SPWeb -Identity http://SPServer/NewSite -Confirm:$false
Configure SharePoint settings for better backup or restore performance

You can configure settings in both Central Administration and Windows PowerShell to increase
backup or restore efficiency and performance.
If you are using the Export-SPWeb Windows PowerShell cmdlet, you can use the NoFileCompression
parameter. By default, SharePoint Server 2010 uses file compression while exporting Web
applications, site collection, lists, or document libraries. You can use this parameter to suppress file
compression while exporting and importing. File compression can use up to 30% more resources,
but the exported file will use approximately 25% less disk space. If you use the NoFileCompression
parameter when exporting, you must also use it when you import the same content.
You can also use the NoLogFile parameter. By default, SharePoint Server 2010 always creates a log
file when you export content. You can use this parameter to suppress log file creation to save
resources. However, we recommend that you always create logs. This is because logs can be used in
troubleshooting. Moreover, log creation does not use many resources.
http://blogs.msdn.com/b/russmax/archive/2009/10/21/sharepoint-2010-granular-backup-restorepart-1.aspx