cores 16 cores 32 cores 64 cores Operating Systems Ubuntu Debian CentOS RedHat Enterprise Linux Scientific Linux Oracle Linux Memory 512MB - min 1GB - up to 100 users 2GB - up to 500 users 4GB - up to 2,000 users 8GB - up to 5,000 users 16GB - up to 10,000 users 32GB - up to 20,000 users 64GB - up to 40,000 users