Here are list of recommended hardware configurations for WSO2 carbon 4.2.0 based products. With following specifications we can get maximum output of servers.
Physical : 3GHz Dual-core Xeon/Opteron (or latest), 4 GB RAM
(minimum : 2 GB for JVM and 2GB for the OS, 10GB free disk space
(minimum) disk based on the expected storage requirements
(calculate by considering the file uploads and the backup policies) .
Virtual Machine : 2 compute units minimum (each unit having 1.0-1.2
GHz Opteron/Xeon processor) 4 GB RAM 10GB free disk space.
One cpu unit for OS and one for JVM. (e.g if 3 Carbon instances
running require VM of 4 compute units 8 GB RAM 30 GB free space)
EC2 : M1-Medium instance to run one Carbon instance. (e.g if 3 Carbon
instances EC2 Large instance)
Physical : 3GHz Dual-core Xeon/Opteron (or latest), 4 GB RAM
(minimum : 2 GB for JVM and 2GB for the OS, 10GB free disk space
(minimum) disk based on the expected storage requirements
(calculate by considering the file uploads and the backup policies) .
Virtual Machine : 2 compute units minimum (each unit having 1.0-1.2
GHz Opteron/Xeon processor) 4 GB RAM 10GB free disk space.
One cpu unit for OS and one for JVM. (e.g if 3 Carbon instances
running require VM of 4 compute units 8 GB RAM 30 GB free space)
EC2 : M1-Medium instance to run one Carbon instance. (e.g if 3 Carbon
instances EC2 Large instance)