fgiugliano wrote:What if there's some catastrophic failure at Microsoft and they accidentally wiped out all of your user data?
dellock6 wrote:I'd be really doubtful that no email will ever be needed to be restored that is older than 90 days...
Mike Resseler wrote:Dave,
You are right that a catastrophic failure is highly unlikely but still possible. But there are other differences you need to take into account. What if you are in a financial dispute and they locked access to your subscription.
Litigation hold comes with two questions: What to hold / How long to hold. It comes with an additional cost (depending on the subscription I believe). If you use litigation hold, I still believe VBO makes sense as backup since litigation hold isn't backup. It also brings your emails to another location and can be used to export to PST or even export to a running Exchange server on-prem for testing / DR scenario's or something like that.
A combination can be used also and might be of interest depending on your needs.
But in the end, if your company only needs 90 days of "retention" then you might indeed have enough with litigation hold alone (with the cons of being MSFT only) or you might want to consider a litigation hold and backup from us for e-discovery reasons on-prem, testing purposes or a way to make sure you can "exit" O365 when necessary and keep longer retention by combining VBO on a VM and backup that VM with VBR.
Just some thoughts
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