![\"Active](\"https:\/\/www.systools.in\/blog\/wp-content\/uploads\/2023\/11\/active-directory-cross-forest-migration.webp\")
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Active Directory cross forest migration is one of the most important tasks in the AD lifecycle. Anytime there is a restructuring, be it mergers, acquisitions, or divestitures, this is a task that cannot be skipped. Moreover, AD is at the forefront of maintaining the interrelationships between domains, users, computers, and their data. Therefore, attempting a migration without prior knowledge is not recommended.<\/span><\/p>\n That’s why we have made this guide for everyone who needs it, no matter whether you are an IT veteran or a new admin handling your first migration project. First, we have an overview of the migration procedure itself.<\/span><\/p>\n Here we are going to discuss the user requirements and the procedure to opt for thereafter. Like any major project, AD data transfer between forests is also a nuanced subject with many variables. The administrator who is appointed for the task must have a proper plan in place. Not following the procedure can lead to disastrous consequences, including data loss, inaccessible domains, etc.\u00a0<\/span><\/p>\n Moreover, AD migration between two different domains needs thorough preparation from users and administrators. So here are some best practices to keep in mind, regardless of the procedure you opt for.<\/span><\/p>\n ADMT<\/span><\/p>\n PowerShell<\/span><\/p>\n Automated Utility<\/span><\/p>\n There are two approaches that administrators can follow according to their level of expertise. Let\u2019s start with the GUI-based one:\u00a0<\/span><\/p>\n ADMT<\/b><\/p>\n It’s Microsoft\u2019s own tool for the task<\/span><\/p>\n PowerShell<\/b><\/p>\n The following is the PowerShell script for the cross forest migration of AD users:<\/span><\/p>\n When we introduce you to the <\/span>professional AD migration software<\/a><\/b>, it has the best-in-class features and an interactive interface to make the migration as easy as possible. With a robust set of filters to trim down the data at the source itself, the tool helps administrators cut down on migration time. Not to mention the way it completely eliminates the need to memorize scripts and protocols, thereby reducing the technical proficiency required. This is the best tool to migrate users and computers from one forest to another<\/a> in a few steps.<\/span><\/p>\n Download Now<\/a> Purchase Now<\/a> Steps to use the tool for Active Directory cross forest migration are given below<\/span><\/p>\n Step 1. Open the tool by typing default credentials (administrator) in place of username and password.<\/span><\/p>\n Step 2. On the next screen, register the source and target domain controllers.\u00a0<\/span><\/p>\n Step 3. Click the source domain, go to “Info\u201d and type the admin credentials for validation.<\/span><\/p>\n Step 4. Then go to the Active Directory section and fetch all source objects.<\/span><\/p>\n Step 5. Perform the same steps for the target domain as well.<\/span><\/p>\n Step 6. In the Migration section, hit \u201ccreate migration scenario,\u201d type the migration name, and select the endpoints from the dropdown list.<\/span><\/p>\n Step 7. In the \u201cTask\u201d section, click on the \u201cCreate Task\u201d option. Select the options you want at the destination domain.<\/span><\/p>\n Step 8. Once object selection is complete, select the create option and proceed with the Active Directory cross forest migration.<\/span><\/p>\n Step 9. When objects appear on the preview dashboard, map them and click on start task, on the window that pops up hit Start.<\/span><\/p>\n After the discussion of all available active directory cross forest migration methods, there is no doubt that selecting the tool is the best option. Moreover, compared to its counterparts, like ADMT or PowerShell, it clearly outperforms them in all parameters. Whether we talk about the migration speed, efforts required from the user end, or minimizing errors. Therefore, it is in the best interest of the admin to go for the automated solution in any scenario.<\/span><\/p>\n Q. What is cross forest migration in AD?<\/span><\/em><\/p>\n Active directory, at its core, has a forest-like structure in which different objects like users, computers, groups, folders, etc. exist. Every forest has its own unique domain. Whenever there are mergers, acquisitions, or restructuring, companies have to migrate their data from one domain to another. When it also involves all items of an AD, this is termed a cross forest migration.<\/span><\/p>\n Q. What are the minimum requirements for a system to run the ADMT?<\/span><\/em><\/p>\n If an admin wants to access the ADMT, they must be working on a machine with Windows Server 2008 or higher. They also need to ensure that the server is not in read-only mode.<\/span><\/p>\n Q. A recent batch of new mailbox data arrived during the migration is there a way to move it without restarting the migration?<\/span><\/em><\/p>\n Yes, the automated tool has a delta migration feature which is solely designed for these scenarios. Using it the tool can identify what all data has already been moved and thus only moves the data which is new.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":" Active Directory cross forest migration is one of the most important tasks in the AD lifecycle. Anytime there is a restructuring, be it mergers, acquisitions, or divestitures, this is a <\/p>\n","protected":false},"author":7,"featured_media":3693,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[361],"class_list":["post-3690","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-active-directory"],"yoast_head":"\nOverview of Cross Forest Migration in Active Directory<\/span><\/h2>\n
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Prerequisites for Active Directory Cross Forest Migration<\/span><\/h2>\n
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Add-WindowsFeature RSAT-AD-PowerShell<\/span><\/pre>\n\n
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Manual Steps for Active Directory Cross Forest Migration<\/span><\/h3>\n
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#Import new user data via the source path of the premade CSV file<\/span>\r\n\r\n$NewADUsers = Import-csv C:\\scripts\\newadusers.csv<\/span>\r\n\r\nforeach ($User in $NewADUsers)<\/span>\r\n\r\n{<\/span>\r\n\r\n$NewUsername = $User.username<\/span>\r\n$NewPassword = $User.password<\/span>\r\n$NewFirstname = $User.firstname<\/span>\r\n$NewLastname = $User.lastname<\/span>\r\n$NewDepartment = $User.department<\/span>\r\n$NewOU = $User.ou<\/span>\r\n$Newsid = $User.sid<\/span>\r\n$NewUserPrincipalName = $User.UserPrincipalName<\/span>\r\n$NewDistinguishedName = $User.DistinguishedName<\/span>\r\n\r\n#Scan the AD for Preexisting Users<\/span>\r\n\r\nif (Get-ADUser -F {SamAccountName -eq $NewUsername})<\/span>\r\n\r\n{<\/span>\r\n\r\n#In case a user is present\u00a0<\/span>\r\n\r\nWrite-Warning \u201cA user account $NewUsername already exists in Active Directory.\u201d<\/span>\r\n\r\n}<\/span>\r\n\r\nelse<\/span>\r\n\r\n{<\/span>\r\n\r\n#For all new users, you have to create an account before proceeding<\/span>\r\n\r\n#Account will be created in the OU listed in the $NewOU variable in the CSV file; ensure to modify the domain name in the\u201d-UserPrincipalName\u201d variable<\/span>\r\n\r\nNew-ADUser <\/span>\r\n-SamAccountName $NewUsername <\/span>\r\n-UserPrincipalName $NewUserPrincipalName <\/span>\r\n-Name \u201c$NewFirstname $NewLastname\u201d <\/span>\r\n-GivenName $NewFirstname <\/span>\r\n-Surname $NewLastname <\/span>\r\n-Enabled $True <\/span>\r\n-ChangePasswordAtLogon $True <\/span>\r\n-DisplayName \u201c$NewLastname, $NewFirstname\u201d <\/span>\r\n-Department $NewDepartment <\/span>\r\n-DistinguishedName $NewDistinguishedName <\/span>\r\n-SID $Newsid <\/span>\r\n-Path $NewOU <\/span>\r\n-AccountPassword (convertto-securestring $Password -AsPlainText -Force)<\/span>\r\n\r\n}<\/span>\r\n\r\n}<\/span><\/pre>\nAutomated Tool for AD Migration in A Step by Step Manner<\/span><\/h3>\n
\n<\/span><\/p>\n![\"Enter](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/2-enter-login-credentials.webp\")
<\/p>\n![\"Register](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/3-register-domain-controller.webp\")
<\/p>\n![\"First](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/7-first-domain-validation.webp\")
<\/p>\n![\"Fetch](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/9-fetch-first-domain-ad-objects.webp\")
<\/p>\n![\"Object](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/15-second-domian-ad-objects-fetched.webp\")
<\/p>\n![\"Create](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/17-set-source-destination.webp\")
<\/p>\n![\"Save](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/20-set-task-name.webp\")
<\/p>\n![\"Select](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/22-select-action.webp\")
<\/p>\n![\"Click](\"https:\/\/systoolskart.com\/imgp\/ad-migrator\/25-start-job.webp\")
<\/p>\nConclusion<\/span><\/h3>\n
FAQs<\/span><\/h4>\n