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dirkdigs
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using VBO365 for tenant to tenant migration

Post by dirkdigs » 2 people like this post

Hello, I have a small O365 tenant with about 20 users and 100 GB of mailbox data.
I would like to backup this data and then restore it to another tenant account. (essentially us VBO365 for tenant to tenant migration)
Can this be done using VBO365? Could I use a free trail of this product for this purpose?
Mildur
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Re: using VBO365 for tenant to tenant migration

Post by Mildur » 1 person likes this post

It should be possible for Exchange Online Data.
Sharepoint Data cannot be restored in an other tenant.

Instead using Veeam, I recommend to look at the new Feature from Microsoft for Cross Tenant Mailbox Migration:
https://docs.microsoft.com/en-us/micros ... -worldwide


Veeam Limitation:
https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50
Cross-tenant restore to Microsoft Office 365 is only possible for Exchange Online objects, not for SharePoint sites.
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dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

why do you recommend that over Veeam? That seems way more complicated with the involvement of scripts etc. .
Veeam has a nice GUI. We do not have any SharePoint data to move.
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Re: using VBO365 for tenant to tenant migration

Post by johan.h » 1 person likes this post

Veeam can only be used to backup and restore Exchange Online Data to a different tenant, and does not help with the account creation/migration piece.

Considering Microsoft 365 consists of SharePoint, OneDrive, Teams, and more, it is likely you will need to use either the built-in Microsoft 365 tooling to help with the migration, custom scripting or some other solution to help solve your migration needs.
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

no we just need to move mailbox data nothing else.
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Re: using VBO365 for tenant to tenant migration

Post by johan.h » 1 person likes this post

Ok, well, if you've already created the users in the new tenant and are able to restore this data using VBO, then I don't see any issues.
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

as far as backing up the existing tenant mailbox data. i had a question .
could i setup a nightly backup job(daily) and then on cutover time (example 5 PM Friday night) I would take one last (incremental) backup and then use that for restore to my new tenant?
I guess another way of asking my question would be for my last backup before cutover can i take an incremental backup or does it need to be a full?
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Re: using VBO365 for tenant to tenant migration

Post by Mildur » 3 people like this post

Vbo Backups are always incremental Backup.
I would say, it depends on your VBO365 Backup Repo.
If you have a Snapshot Based Backup Repo, an incremental Backup is enough.

If you have an Item Level Retention, then please create a new Backup Repo with the Type „Snapshot Based Retention“ and do a Full Backup with a new Job for the migration. With the Item Level Backup Repo, there is no guarantee, that all elements are migrated with your methode. Especially if you have configured a small Retention.

https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50
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dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

Do i need to add/use a veeam Proxy?, How critical is this?? I plan to do all of this from a single box.
(This includes using a data partition for a backup REPO )
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Re: using VBO365 for tenant to tenant migration

Post by Mildur » 2 people like this post

Your installed VBO 365 server is already the default Proxy Server. For the installation and configuration, you will need to have knowledge about your Office 365 and what authentification methods you can use. Then, it is absolutely no critical, what you want todo.

You will have to:

1. Add a Backup Repo with the Type „Snapshot Based Retention“
https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50

2. Add a Office 365 Organization
https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50

3. Add a Backup Job
https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50

4. Run the Backup Job

Everything can be find in the Guide.
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Mildur
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Re: using VBO365 for tenant to tenant migration

Post by Mildur » 2 people like this post

An other thing, which you have to plan carefully, is the mail domain transfer from one Tenant to another.
This transfer can last 5 or if you are unlucky longer than 30-60 minutes.
It depends on Microsoft with their cloud performance and your TTL on your DNS Servers.

You will have to remove the mail domains from the user in the old tenant and configure them on the new users in the new tenant.

0. Export MailboxPermissions, SendAs Permission, MailboxFolderpermissions, Alias Mailadresses from each mailbox to excel or another document
1. delete mailaddresses with the maildomain from users in old tenant, make @tenant.onmicrosoft.com their new Mailaddress/Username
2. remove maildomain from old tenant
3. add maildomain in new tenant
4. add mailaddresses and aliasaddresses as documented in step 0 to the correct users in the new tenant
5. change MX on the DNS, so that the mails are send to the new tenant
6. add the new tenant as a organization to VBO365
7. create a backup from the users in the old tenant
8. Restore the data to the users in the new tenant
9. reconfigure every „MailboxPermissions, SendAs Permission, MailboxFolderpermissions“ which you have exported on step 0


Mailbox Migrations are funny, and there isnt a GUI for every step. The steps are to different and no software will take over for you the works which needs to be done :)
Data Migration is one thing, Metadata (Configurations) Migration another.
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Mike Resseler
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Re: using VBO365 for tenant to tenant migration

Post by Mike Resseler » 3 people like this post

There might not be a GUI for every step, but there is @Mildur :-)

Thank you for the step-by-step guidance!
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Re: using VBO365 for tenant to tenant migration

Post by Mildur » 1 person likes this post

Haha, thanks Mike :)
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dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

well this product definitely needs some work when it comes to VBO365 restore options to another ORG.

Would that be fair to say ?
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

Does Veeam perform EWS-based migrations ?

(When restoring exchange data)

Just curious
Mildur
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Re: using VBO365 for tenant to tenant migration

Post by Mildur »

Yes, EWS will be used.
The required permissions for restore depends on your choosen authentification method:

https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50


It‘s possible, that with „Modern App-Only Authentication“, the restore is done directly over the Azure App. I have never tried it out:

https://helpcenter.veeam.com/docs/vbo36 ... 50#appcert
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Mike Resseler
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Re: using VBO365 for tenant to tenant migration

Post by Mike Resseler »

@dirkdigs
well this product definitely needs some work when it comes to VBO365 restore options to another ORG.
Can you tell us what you mean? I am not going to argue yes or no but I am always open to learn what is not OK for our customers
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

well why cant i restore multiple mailbox from org1 to org2 at the same time? (and I'm talking about the gui version specifically . )
Mildur
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Re: using VBO365 for tenant to tenant migration

Post by Mildur »

The next time, it would be better to use "dedicated migration software" for such a task :-)
VBO365 is a "Backup software". Not a "migration software". It works, but it has some disadvantages.

I'm doing my migration mostly with one of this two services:
https://migrationwiz.bittitan.com/app
https://www.codetwo.com/
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dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs » 1 person likes this post

yes im aware of those 2 products . we prefer to give our business to veeam and always will.
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

it would be nice if we could exclude other folders ?
not just drafts , deleted items and Hold items
Image
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Re: using VBO365 for tenant to tenant migration

Post by Mike Resseler »

Can you tell us if there is a specific reason for it? Is this intended to speedup restores? Or other reasons?
dirkdigs
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Re: using VBO365 for tenant to tenant migration

Post by dirkdigs »

yes , correct.
many users will organize and use outlook to store email data in folders. sometimes hundreds of folders.
this could be sub-folder of the primary Inbox folder.
Having the control to exclude specific folders could speed up restores.
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Re: using VBO365 for tenant to tenant migration

Post by Mike Resseler »

I understand the request, but unfortunately, it isn't that simple because those folders we would need to identify and things will be very complicated. However, when you restore multiple mailboxes, to speed things up (meaning, to allow people to work faster) we have this built-in solution that allows you to restore the most recent items first: https://helpcenter.veeam.com/docs/vbo36 ... tml?ver=50

Can you look at this and see if it can work for you?
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Re: using VBO365 for tenant to tenant migration

Post by TBCuser1 »

dirkdigs wrote: May 10, 2021 3:15 pm Hello, I have a small O365 tenant with about 20 users and 100 GB of mailbox data.
I would like to backup this data and then restore it to another tenant account. (essentially us VBO365 for tenant to tenant migration)
Can this be done using VBO365? Could I use a free trail of this product for this purpose?
we are planning for a similiar situation, but before we migrating, Teams will lose its Chat History, VBO cannot restore Chat history, will Veeam enable Chat History restores from one tenancy to another tenancy? are there any limitations?
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Re: using VBO365 for tenant to tenant migration

Post by Polina » 2 people like this post

Hi,

First, I'd echo my colleagues by noting that VB365 is not a migration software.
Next, VB365 protects only team's channel messages; it doesn't support 1-2-1 and group chats, as well as private channels' messages (the full list of limitations is available in our HelpCenter). When it comes to restores, channel posts can only be restored as an HTML file to a new tab in a team. Injecting posts back to the original conversation/back to the Posts tab is not yet possible.

Thanks!
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