Hi.

Thanks for posting. 🙂

I'm thinking something along these lines:

- AD+DC = 4GB

- SQL Server + simple messaging services= 10GB

- Retail (20 CAL) = 8GB

- RDS (5 CAL)= 4GB

- Production (1 ERP auto instance) = 1GB

Total= 27GB/32GB

Right now our SQL Server is running 8GB and only 5GB are used, so i think 10GB will be more than enough for the next year, at least.

The other machines are also oversized, like the ERP auto instance doesnt really need 1GB, but i put them there because of the v-WS2012 instance.

8GB is more than enough for 20 guys to run RDS. Since in those sessions will only be used to run our POS system.

4GB to 5 RDS CAL's is also more than enough, due to the fact that it will be used to access our ERP when travelling, or for ERP maintenance guys.

Do you think 5GB is enough for overhead? Most machines are already armed with enough resources to get by until next year, when i think i may get a second server and begin a small cluster.

What about I/O usage? Do you think the disks (RAID10) will be able to handle the job with ease?

thanks