You'll run this script on the legacy Exchange server. PublicFolderToMailboxMapGenerator.ps1: This script creates the public folder-to-mailbox mapping file by using the output from the Export-PublicFolderStatistics.ps1 script. You'll run this script on the legacy Exchange server.Įxport-PublicFolderStatistics.psd1: This support file is used by the Export-PublicFolderStatistics.ps1 script and should be downloaded to the same location. You'll run this script on the legacy Exchange server On-Premises.Įxport-PublicFolderStatistics.ps1: This script creates the folder name-to-folder size mapping file. SourceSideValidations.ps1: Source Side Validation script scans the public folders at source and reports issues found along with action to fix the issues. You'll perform the migration using the *-MigrationBatch cmdlets, in addition to the following PowerShell scripts: However, if you elect to migrate public folders using PST export, see the Migrate Public Folders to Microsoft 365 or Office 365 by using Outlook PST export section later in this topic. We recommend that you use the cmdlet-based instructions in this document to migrate public folders to Microsoft 365, Office 365, or Exchange Online.
Auto-split can't handle the sudden growth of public folder mailboxes when you use PST export to migrate your public folders and you may have to wait for up to two weeks for auto-split to move the data from the primary mailbox. Microsoft 365, Office 365, and Exchange Online public folder mailbox growth is managed using an auto-split feature that splits the public folder mailbox when it exceeds size quotas. We recommend that you don't use Outlook's PST export feature to migrate public folders to Microsoft 365 or Office 365 or Exchange Online. The terms may be used interchangeably in this topic. Also, the steps in this topic apply to both Exchange Online and Microsoft 365 or Office 365. This topic refers to the Exchange 2010 SP3 RU8 server as the legacy Exchange server. This topic describes how to migrate your public folders in a cutover or staged migration from Update Rollup 8 for Exchange Server 2010 Service Pack 3 (SP3) to Microsoft 365 or Office 365 and Exchange Online. Summary: Use these procedures to move your Exchange 2010 public folders to Microsoft 365 or Office 365.