Update to scalability guidance for Exchange 2016
The Microsoft Exchange Team has recently announced an update to their scalability guidance for Exchange 2016. Effective immediately, the maximum recommended memory for deployments for Exchange 2016 has changed from 96 GB to 192 GB.
These changes are noted in the Exchange 2016 Sizing Guidance as well as the updated version of the Exchange Server Role Requirements Calculator.
The calculators can be found here:
Quote from Jeff Mealiffe: Principle PM Manager – Office 365 Customer Experience
We have received ongoing feedback that the previous recommended maximum memory size of 96 GB was far too limiting, and that it was difficult to purchase modern hardware with memory of that size. We are aware that this has led to many difficult architectural choices, and we have been evaluating multiple types of larger hardware in our Exchange Online deployments to get to a significant level of comfort that customers will not experience issues with utilization of memory up to this size.
At this time, we are not raising the recommended maximum processor core count. While we are evaluating hardware with core counts dramatically larger than 24, we have additional work to do within the Exchange product to be able to safely recommend those core counts.
To sum it all up, the Exchange 2016 processor and memory scalability guidance is as follow.
|Recommended Maximum Processor Core Count||24|
|Recommended Maximum Memory||192 GB|