Forum Discussion
Exchange 2019 memory requirements
Hi, I planned to install Exchange 2019 on our infrastructure (400 mailboxes), but memory requirements are 128 GB of RAM!! Is it mandatory or can we install it with less memory (32 GB)? Is someone ins...
Blade1966Surely that's a error! It would be crazy if the minimum memory requirement to host mailboxes is 128GB. In Exchange Server 2016 the recommended maximum is 192GB.
No error.
See this - https://docs.microsoft.com/en-us/exchange/plan-and-deploy/system-requirements?view=exchserver-2019
Mailbox: 128 GB minimum recommended. Exchange 2019 has large memory support (up to 256 GB)
Remember MS are using physical servers to run Exchange online which are presumably coming with at least 128GB RAM. They probably aren't bothering to test anything smaller.