Method to Determine First Backup Date for M365 User

[EricinIT]

Hi,

Is there an easy method to determine the first date a M365 user mailbox was backed up? In PowerShell, I'm able to get the last backup date for a mailbox from the properties using the Get-VBOEntityData cmdlet but it doesn't show the first date. The only method I've found so far is to load a restore point in PowerShell and check that restore point to see if the user is in the list. It's time consuming when there are potentially 3 years to look through as each restore point takes 5 minutes to load.

Thanks,

Eric

[Polina]

Hi Eric,

I believe, checking the restore points is the only way.
May I ask why you need to know the first backup date?

[EricinIT]

Hi Polina,

A legal team wants to know what dates a list of users were backed up.

Eric

[Polina]

OK, you can use the (GET) v8/RestorePoints endpoint to get the list of restore points for a specific user, but there's a limitation - it will only return you restore points created by VB365 later than build 6.0.0.367; earlier RPs are not available (see the known issues in the Release Notes).

[EricinIT]

Ok, the client onboarded with us in 2020 so that was probably on v5.

Eric