People,
I wonder what could be the caveats or things to consider before migrating my on-premiseExchange Server 2010 SP3 mailboxes into Office 365 at the end of this year the total Exchange Mailbox count is 2890 and total Mailbox database size is 8.5 TB.
My clients are using Outlook 2010 & 2013 (multiple Active Sync devices) spread across multiple geographical region site offices (Europe and Asia Pacific).
Note:
I also have emails older than 1 year archived by Symantec Enterprise Vault 10 with approximate size is 7 TB
Single AD domain forest.
My goal after migrating to Office 365 is to achieve the following:
1. No need to worry about Microsoft Exchange Updates, Hotfixes, updates and bugs with Active Sync devices (Delegate calendar nightmare).
2. Release the disk space used by the email infrastructure back to the existing Storage Array for another VM to use.
3. No need to worry about any outage or reliability issue at all.
Any thoughts and comments would be greatly appreciated.
Thanks in advance.
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