You have a SharePoint Server 2013 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 anew feature
in SharePoint 2013 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 namedlike: 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 2013
Lets take a closer look at backup and sestore. When working with sites, we can use the Export-SPWeb 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 ofa 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 2013
Finally, lets take a look at how to remove an existing site. The Remove-SPWeb cmdlet removes a specific site
from SharePoint 2013. 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 2013 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 2013 always creates a log filewhen
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-2013-granular-backup-restore-part-1.
aspx