You can insert old data up to the in-memory retention period you choose (which can be 1 - 8766 hours).
You can't insert future data more than 15 minutes into the future though.
You can't insert future data more than 15 minutes into the future though.
Memory-based storage is expensive, but not ruinously so.
The reason why this needs to be in-memory (I'm guessing) is a combination of dedupe checks and efficient ordered logs in the on-disk journals.
Additionally, you can scale the memory retention policy up and down as you see fit. So if you notice a network outage, you can scale up the retention policy for the duration and then reduce it back down again after.
Industrial facilities don't always expect their outages.
> Additionally, you can scale the memory retention policy up and down as you see fit. So if you notice a network outage, you can scale up the retention policy for the duration and then reduce it back down again after.
Better, though still a hassle to manage.