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Should I backup my Office 365 email or is Microsoft's cloud reliable?

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To answer questions of data availability, Microsoft published an article on their Office 365 blog titled Cloud services you can trust: Office 365 availability. In the article, Microsoft details their uptime, the infrastructure they architected with reliability in mind, and their processes which backup and protect your email, calendar, and other data in Office 365. Here are some of those highlighted:

Redundancy. Redundancy at every layer–physical, data and functional:


Resiliency. Active load balancing and constant recovery testing across failure domains:


Distributed Services.Functionally distributed component services:


Monitoring. Extensive monitoring, recovery and diagnostic tools:


Simplification. Reduced complexity drives predictability:


Human back-up. 24/7 on-call support:


Microsoft also discusses continuous learning, as they use their own services, and communication to their customers for transparency through the Service Health Dashboard that your local mail administrators have access to so we may be aware of any ongoing issues.

Accidentally Deleted Emails

But what happens if users accidentally delete data from their mailboxes? Exchange Online provides a number of features that can help you restorethat data:


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