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JayFlag for United States of America

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Office 365 email retention limit and backup

Office 365 backup retention limit. In our current OnPrem exchange server, we are currently doing a continues daily backup. The reason of the continues daily backup because of legal noticed that we received. So, if we are going to move our email to Office 365, what is the retention limit that we can set? What is our option base of our current situation? Can we still do the continues daily backup in the cloud?
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timgreen7077

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The most covenient way for unlimited retention with O365 is to migrate to plan with mail archiving and enable unlimited retention

See Enable unlimited archiving in Office 365
why don't you put the affected mailboxes on litigation hold?
If you need to protect your mailbox data from being deleted for legal reasons, you have two basic options - eDiscovery together with litigation hold and retention policies. Here is a quick comparison between the two: Office 365 litigation hold vs retention policy – what’s the difference
Office 365 lacks a native backup option - for that, you will need a third party tool. If you are interested in a local backup of Office 365 data, I recommend taking a look at CodeTwo Backup for Office 365.
First you need to understand, that Office 365 is a SAAS or Software as a service platform. Meaning, it provide standard features as per plan customer purchased to all customers. Microsoft still releasing on-premises servers, as they know, every customer cannot be moved to cloud. Especially, financial customers, who has legal requirements.

Being said, as far as I know, Microsoft uses db retention policy to keep deleted data. It won't take any backup's everyday. And with the invention of DAG, there is no need to take any backup, I have running my client 100% backup less.

In your case, I advise you to continue using on-premises servers, if backup is your highest priority or you need 100% control on your servers and want more customization, as per your need.
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