Forum Discussion
How to achieve a proper retention
Hi there, As I'm just trying to learn how to utilize O365 after 10 years OnPrem I have some question marks how to achieve a proper retention. A lot of customers utilize an archive solution togethe...
Hi ChrisHoardMVP,
this answers my question well enough. I know the shared document, I only thought ok, this is explained very well, but can I transfer this approach to the whole company? So it seems, yes.
Furthermore I found this helpful...
Exchange Online Limits
I just want to be on the save side....
A mailbox with Exchange Online Plan 2 which is not on hold could have up 30 GB for the dumpster. So if the user is deleting a lot, he can only use up to 70 GB, right?
And if the mailbox is on hold (without archive) it could utilize even more. So if the user is deleting comprehensively maybe his regular inbox might take only 5 GB and the dumpster 95 GB.
So if I understand correctly without hold the maximum dumpster size is static and with hold it is dynamic. But everything plays in the maximum mailbox size limits, right?
Kind regards,
woelki
A mailbox which is on litigation hold uses the recoverable items folder which is 30Gb static size. So it means if users are deleting lots of mail it may fill up quickly.
https://docs.microsoft.com/en-us/Exchange/policy-and-compliance/holds/litigation-holds?view=exchserver-2019
Litigation Hold preserves items in the Recoverable Items folder in the user's mailbox. The default size for this folder is 30 GB. Depending on number and size of items deleted or modified, the size of the Recoverable Items folder of the mailbox may increase quickly. The Recoverable Items folder is configured with a high quota by default. We recommend that you monitor mailboxes that are placed on Litigation Hold on a weekly basis to ensure they don't reach the limits of the Recoverable Items quotas.
In place hold activates the archive and gives another 50/100Gb dependent on your plan. You can configure policies to move information to the archive if required.
You are correct everything plays into the maximum limits as outlined in the articles. In other words, litigation hold where everything is preserved has a hard ceiling of 30Gb and is not unlimited.
So, if you wanted an unlimited archive meaning unlimited storage and unlimited preservation of mail then this would be the point to consider a third party journaling solution.
Hope that clarifies
Best, Chris
https://docs.microsoft.com/en-us/Exchange/policy-and-compliance/holds/litigation-holds?view=exchserver-2019
Litigation Hold preserves items in the Recoverable Items folder in the user's mailbox. The default size for this folder is 30 GB. Depending on number and size of items deleted or modified, the size of the Recoverable Items folder of the mailbox may increase quickly. The Recoverable Items folder is configured with a high quota by default. We recommend that you monitor mailboxes that are placed on Litigation Hold on a weekly basis to ensure they don't reach the limits of the Recoverable Items quotas.
In place hold activates the archive and gives another 50/100Gb dependent on your plan. You can configure policies to move information to the archive if required.
You are correct everything plays into the maximum limits as outlined in the articles. In other words, litigation hold where everything is preserved has a hard ceiling of 30Gb and is not unlimited.
So, if you wanted an unlimited archive meaning unlimited storage and unlimited preservation of mail then this would be the point to consider a third party journaling solution.
Hope that clarifies
Best, Chris
ChrisHoardMVP wrote:
Hope that clarifiesAlmost. As I can read from the Exchange Online limits doc, having an E3 or E5 plan means that the recoverable items are unlimited in the archive. As I know from OnPrem the archive is a second mailbox.
So I would guess we have two dumpsters in this case. One limited dumpster in regular mailbox, one in the dumpster.
So combining litigation hold together with a suitable archive retention policies should be a rock solid solution, right?
ChrisHoardMVP wrote:
In place hold activates the archive and gives another 50/100Gb dependent on your plan. You can configure policies to move information to the archive if required.Is that true? So if I got an E3 or E5 plan and I activate litigation hold the archive will be enabled automatically (I guess with default MRM policy)?
Kind regards,
woelki
