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I currently have 4 e-mail servers. I am building a new e-mail server where I will migrate all my domains and users, so I will have everything on only one server.
My servers are:
Smartermail Enterprise v12 - 22 domains and 800 users
Smartermail Enterprise v6 - 6 domains and 460 users
Smartermail Enterprise v11 - 213 domains and 3000 users
Smartermail Enterprise v10 - 1 domains and 2000 users
So my new server will host every domain and user, in total around 250 domains and 6000 users.
The hardware is a Dell R720 with 2x Intel E5-2620 processores (12 cores each) and 32Gb RAM. It has 8 2Tbs Hard Drives (16Tb in total).
My first question is if the hardware has enough processing power to host this quantity of domains and users, or if it is recommended to run secondary servers as anti-spam/anti-virus or outgoing/incoming gateways.
My second question is what raid configuration should I use, if any?
I have a second server with the exact same configuration to run as a backup.