Migrating from local Exchange to Office 365/exchange online

[AndreasK]

Hello all,

i hope, i am here on the right place for my question.

i am currently start migrating mailboxes from a local exchange server 2016 to office 365

1. exporting mailbox with exchange management shell

2. generate import job

3. copying the .pst with azcopy to azure storage

4. make mapping file (i am using user@domain.onmicrosoft.com)
6. validate mapping file

7. start import when ready

now near everything works perfect

all mails/calendar/contacts/... are importet

BUT:
they are in a subfolder "imported" in the main account

so i have for example 2 calendar folders:
the "normal" one and the one in the subfolder imported

any idea?

best regards

Andreas

[#2]

What did you specify for the TargetRootFolder in the mapping file? And more importantly, why are you using the PST import method if you have on-premises Exchange? Configure Hybrid and do a proper migration, PST import is for situations where you don't have any other options.

[#3]

thank you for your fast answer, Vasil

"What did you specify for the TargetRootFolder in the mapping file? "
nothing.
in the meantime i try "\", it looks like it solve the problem

"why are you using the PST import method if you have on-premises Exchange? "
i read the documentation for migrating and there was the hint, that the cutover migration is for < 2000 mailboxes
and the hybrid for > 150

i have just 8 mailboxes and 3-4 shared mailboxes

i will try the hybrid version, buit i am not shure, if i can setup the local exchange server for directory synchronisation. maybe there are some "not so good setups" from the last sysadmin

ps:
i am since 2 weeks on my new workingplace after some month of "out of IT business"
my last exchange server, which i handled, was 2005 ;)

[#4]

Well, for just a dozen of mailboxes, Hybrid will probably be an overkill, especially if you haven't had any experience with it previously. So go with the PST import :)