Move/Copy subsite to another site collection using PowerShell

Using SharePoint Server 2010;

Requirement:

We have a requirement to migrate SharePoint 2010 to SharePoint 2016. The existing SharePoint server 2010 have a subsite which has more subsites on it and the size is huge. We want to copy or move this subsite to a new site collection before we migrate the entire content to SP2016.

Note: Make sure you backup the existing content database and delete the subsite manually after verify the copy.

Solution:

Following powershell script is used to copy the subsite to new site collection which:

1. Create a new content database
2. Create a new site collection and attach to the new content database
3. Export the subsite
4. Import the subsite to the new site collection

PowerShell Script:

param

(

 $webApp = "http://sp2010-prasath:3333", #Web Application  URL

 $DBServer = "sp2010-prasath", #Database Server to create new content DB

 $DBName = "WSS_Content_Projects", #Content DB Name

 $subSiteURL = "http://sp2010-prasath:3333/Projects/", #Subsite URL

 $backupPath = "C:\\Sub Site Backup\\SandboxSubsSite.cmp", #Backup file

 $newSCURL = "http://sp2010-prasath:3333/sites/projects", #New site collection URL

 $SCOwner = "sp2010-prasath\spadmin", #Site Collection Administrator Account

 $errMessage = ""

)

Try

{

#Create new content database

$errMessage = "creating new Content Database"

$scGUID = New-SPContentDatabase $DBName -DatabaseServer $DBServer -WebApplication $webApp -ErrorAction Stop

Write-host "Content Database has been created successfully!"

#Create new site collection in the new content database

$errMessage = "creating new Site Collection"

$template = Get-SPWebTemplate "STS#0"  -ErrorAction Stop

$newSite = New-SPSite -Url $newSCURL -OwnerAlias $SCOwner -Template $template -ContentDatabase $scGUID.Id -ErrorAction Stop

Write-host "Site Collection has been created successfully!"

#Export/Backup existing subsite

$errMessage = "exporting subsite"

$export = Export-SPWeb -Identity $subSiteURL -Path $backupPath -IncludeUserSecurity -IncludeVersions all -HaltOnError -Force -ErrorAction Stop

Write-host "Subsite export successful"

#Import subsite to new site collection

$errMessage = "importing subsite to new Site Collection"

Import-SPWeb $newSCURL -Path $backupPath -ErrorAction Stop

Write-host "Import successful"

}

Catch

{

Write-host "Error occurred while" $errMessage

Write-host "Error Message:" $_.Exception.Message

}

Run the script in PowerShell