By default, Exchange 2010 only allows 2 simultaneous imports of PST files. This value can be adjusted to increase the import speed. However, care must be taken here so that the server is not brought to its knees.
The CMDLet "New-MailboxImportRequest" uses the "Microsoft Exchange Mailbox Replication" service to carry out import processes. The same service is also responsible for moving mailboxes between the Exchange servers. The values for simultaneous imports or moves can be found in the file "MSExchangeMailboxReplication.exe.config" must be adapted. The file is located in the Exchange BIN directory on the Client Access Server (C:\Program Files\Microsoft\Exchange Server\V14\Bin).
To carry out 4 import processes simultaneously, for example, the value for "MaxActiveMovesPerTargetMDB" can be changed from 2 to 4 here
I have described how to import mailboxes here:
https://www.frankysweb.de/?p=412
Unter der Exchange 2016 CU8 sieht die Configfile völlig überarbeitet aus.
Speedwerte sind war höher, aber die Geschwindigkeit ist trotzdem grauenhaft. 12GB Postfach über 4h und vergleichbares. Meistens laufen die Importe in Status „Failed“ wenn sie über 2h tuckern.
Kannst du dazu was sagen?