Back up and Restoration of Farm,Site Collections, Subsites, Content DB.

Ø Farm backup 

Backup-SPFarm –Directory \\App01\SharePointBackups -BackupMethod Full 

Restore-SPFarm –Directory \\App01\SharePointBackups -RestoreMethod New

Ø Back up and restore a service application:

Backup-SPFarm –Directory \\App01\SharePointBackups -BackupMethod Full –Item "Excel Services" 

Restore-SPFarm –Directory \\App01\SharePointBackups -RestoreMethod New –Item "Excel Services"

Ø Back up and restore your SharePoint content databases:

Backup-SPFarm –Directory \\App01\SharePointBackups -BackupMethod Full –Item ContosoPortal 

Restore-SPFarm –Directory \\App01\SharePointBackups -RestoreMethod New –Item ContosoPortal

Ø Back up and restore a site collection:

Backup-SPSite –Identity http://App01/Sites/ContosoPortal -Path \\App01\SharePointBackups\PortalSiteCollection.bak -Force 

Restore-SPSite –Identity http://App01/Sites/ContosoPortal -Path \\App01\SharePointBackups\PortalSiteCollection.bak –Force

Ø Export and import a subsite, list, or library:

Export-SPWeb –Identity http://App01/Sites/ContosoPortal/ -Path \\App01\SharePointBackups\SharedDocuments.bak -Itemurl "Shared Documents" -Force 

Import-SPWeb –Identity http://App01/Sites/ContosoPortal/ -Path \\App01\SharePointBackups\SharedDocuments.bak –Force -IncludeUserSecurity