Создание дополнительной копии БД
Add-MailboxDatabaseCopy DB1-V10 -MailboxServer SRV-VM-EX-BK -ConfigurationOnly Suspend-MailboxDatabaseCopy -Identity DB4-VUN\SRV-EXCH-2 Update-MailboxDatabaseCopy -Identity DB1-V10\SRV-VM-EX-BK -DeleteExistingFiles -NoThrottle -SourceServer SRV-VM-EX3 Get-MailboxDatabase DB1-V10 | Get-MailboxDatabaseCopyStatus | Select name,*DatabaseSeedStatus* Resume-MailboxDatabaseCopy -Identity DB4-VUN\SRV-EXCH-2 https://learn.microsoft.com/en-us/exchange/troubleshoot/administration/add-database-copy-seeding-operation-failed