Peer to Peer Magazine

81 WWW.ILTANET.ORG You cannot complete a sync on mailboxes when they reach about 47GB » There was no definite number we found, so we kept everyone below 47GB just to be sure » The final sync still won't work on large mailboxes reduced just before migration as they need time to sync the reduced size back to Office 365 Carefully plan your migration groups based on physical office, mailbox size AND delegate access » You must migrate an aorney and his/her secretary together if delegate rights are involved » Delegate access only works when both aorney and delegate are on-premises or both in the cloud Where it can get tricky… Nancy has delegate access to mailboxes for Bob and Tina, but Tina's mailbox is too large to migrate to 365. Not only can Tina not be migrated, but neither can Nancy or Bob because everyone with delegate access to each other has to be on the same platform, including anyone else with access to Bob. Cluer used to be enabled by default, and that caused aorneys to lose email messages » Microso has changed Cluer to be disabled by default, but that only applies to new implementations » Check if anyone who was already on 365 has Cluer enabled (disable it) Active Sync, Outlook Web Access and access to the Outlook mobile app are enabled by default Configure your default messaging records management (MRM) policy seings in your admin portal » Adjust seings such as Deleted Item deletion » Don't delete this policy itself Tips, Tricks and Hard-Won Insight Use a recommended value-added reseller (VAR) if possible » Documentation on the web is good, but it's not always easy to locate everything you need to know » Microso support is hit or miss with 365, and it could take a long time to reach a live person to help Invest in third-party tools for mailbox permissions and overall management » Even if you do, PowerShell is your friend and still a necessity Catalog and test all Outlook add-ins well before migration » We found none that did not work with Office 365 Carefully count the number of mailboxes you have » Include resource mailboxes set up as regular users (marketing, info, webmaster, etc.) » Additional licenses are easy to add, but you will be charged the monthly fee times the number of months le in your EA up front There's a hard 50GB mailbox limit » Be overly proactive in helping people get below the limit » Beg, plead and cajole your big mailbox people into helping you help them » IT ended up filing email into the DMS and running searches for huge aachments for many aorneys The ability to send email stops at 49.5GB in Office 365 » Even with mailbox limits in place, we never prevented sending email before, so this was a change Ripping Off the Band-Aid: Tips and Tricks for a Quick Office 365 Migration LESSONS LEARNED DAVID MICHEL David Michel serves as the Director of Technology Services at Broad and Cassel, where he is responsible for the firm's technology infrastructure, assisting in the development of the firm's strategic technology strategy and for the delivery of technology services to all of the firm's offices. David believes in keeping up with technology trends and has expertise in disaster recovery and business continuity, document management, project management, budgeting, virtualization, network operations, storage, email, and telecommunications systems. Contact him at dmichel@ broadandcassel.com.

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