Office365

Exchange Online Multi-Geo for data at-rest

Carlos A Lopez (Twitter: @CLopezDC) Azure, Exchange Online, Office365

Multinational companies with offices around the world often have a need to store their employee data at-rest in specific regions, in order to meet their data residency requirements. Multi-Geo enables a single Office 365 tenant to span across multiple Office 365 datacenter geographies (geos), which gives you the ability to store Exchange data, at-rest, on a per-user basis, in your chosen geos. The two main consideration are the following:

  1. Multi-Geo is currently available to customers with a minimum of 2,500 Office 365 services subscriptions and will have to be directly requested to Microsoft.
  2. The only available Geos are: Australia, Asia Pacific, Canada, European Union, France, India, Japan, Korea, United Kingdom, and United States.

Tune Exchange Online (O365) Performance

Carlos A Lopez (Twitter: @CLopezDC) Office365 , , ,

To improve the speed of migration and reduce your organization’s bandwidth constraints for Exchange Online, consider the following:

  • Reduce mailbox sizes and always use cached mode
    • Smaller mailbox size improves migration speed. Cached Exchange Mode enables a better experience when you use an Exchange account. In this mode, a copy of your mailbox is saved on your computer. This copy provides quick access to your data, and it is frequently updated with the server that runs Microsoft Exchange.
  • Use the mailbox move capabilities with an Exchange hybrid deployment:
    • With an Exchange hybrid deployment, offline mail (in the form of .OST files) does not require re-download when migrating to Exchange Online. This significantly reduces your download bandwidth requirements. A hybrid deployment provides the seamless look and feel of a single Exchange organization between an on-premises Exchange organization and Exchange Online in Microsoft Office 365. In addition, a hybrid deployment can serve as an intermediate step to moving completely to an Exchange Online organization.
  • Schedule mailbox moves to occur during periods of low Internet traffic and low on-premises Exchange use:
    • When scheduling moves, migration requests are submitted to the mailbox replication proxy and may not take place immediately.

 

Get-MailboxPermission to recreate permission in the Exchange Online

Carlos A Lopez (Twitter: @CLopezDC) Office365

I am currently migrating a customer from Exchange On-premise 2010 to Office365 using BitTitan MigrationWiz and a cutover approach. One of the challenges that we see is that with this approach we have to re-create all the accounts in Office365 first before we can start using them. At this particular organization, as many other, the are several delegation and permission being utilized that we will need to re-create in Office365 Exchange online. To simplify the process I exported all the permission to a CSV and processed the data in Excel to convert the lists of users and permissions from a DisplayName to an SMTP or UPN format. With that I was able to recreate the permission in Office365 – Exchange Online.

Get-Mailbox | Get-MailboxPermission | where {$_.user.tostring() -ne "NT AUTHORITYSELF" -and $_.IsInherited -eq $false} | Select Identity,User,@{Name='Access Rights';Expression={[string]::join(', ', $_.AccessRights)}} | Export-Csv -NoTypeInformation "C:\FolderPath\MailboxFolderPermission.csv"