Understanding Active Directory Health during an Active Directory migration and tools you can use like repadmin and dcdiag By Mariette Knap repadmin, dcdiag, replication, journal wrap One of the pitfalls I observe during mentor sessions with clients performing a migration from one Domain Controller to another, such as migrating from any version of SBS to a newer Windows Server 20xx Essentials server, is that Active Directory health is not checked before the introduction of a replica Domain Controller, nor is the health checked during the initial replication between the partners If, after some time, FSMO roles are moved and the old server is demoted, problems may suddenly arise to replication failures. Easy migration kits Easy migration kits Easy to use migration kit Migration kit for migrating from one source (for example SBS 2011) to a new Windows Server environment built on the latest technology. This kit is ideal if you want to perform the migration of your old server yourself. The kit contains everything to ultimately run your infrastructure on more modern operating systems like Windows Server 2016/2019, Exchange Server 2016/2019 or Office 365. Success guaranteed! Get your migration kit Easy migration kits Migration kit for migrating from one source (for example Windows Server 2012) to a new Windows Server environment built on the latest technology. This kit is ideal if you want to perform the migration of your old server yourself. The kit contains everything to ultimately run your infrastructure on more modern operating systems like Windows Server 2016, 2019, 2022 or 2025. Success guaranteed! Get your easy migration kit All our migration kits and IT Pro Collections are backed with awesome support. In our store, you can choose to purchase support as part of your initial purchase or you can get ad hoc support by creating a support ticket here. Don't want to do it yourself? Migration support is also available through consulting service, contact us.