Explanation: Generally, AWS EC2 allows running 20 on-demand instances and 100 spot instances at a time. This limit can be increased by requesting at https://aws.amazon.com/contact-us/ec2-request. Excluding certain types of instances, the limit is lower than mentioned above. For g2.2xlarge, the user can run only 5 on-demand instance at a time.
Reference:
http://docs.aws.amazon.com/general/latest/gr/aws_service_limits.htm…