During the ACVITS install, at Create Stack stage prompts for parameter values. One of the parameters is ‘Instance Type’ ( EC2 Instance Type).
An appropriate value for this parameter depends on the content management system workload. The workload includes the number of concurrent users, file types, file sizes, IO operations from content upload/download and the cloud performance.
The following table shows an average concurrent number of users the system can support based on the EC2 instance type. In Amazon AWS cloud architecture, you can change the instance type anytime without system a downtime. Each use case scenario is different, and we suggest you start with a value and make changes along the way.
| Compute | t2.nano | t2.micro | t2.small | t2.medium | t2.large | t2.xlarge | t2.2xlarge |
| Processor | 1 | 1 | 1 | 2 | 2 | 4 | 8 |
| Memory | 0.5 | 1 | 2 | 4 | 8 | 16 | 32 |
| Concurrent Users | 1 | 4 | 10 | 30 | 70 | 150 | 310 |
| Compute | m4.large | m4.xlarge | m4.2xlarge | m4.4xlarge | m4.10xlarge | m4.16xlarge | |
| Processor | 2 | 4 | 8 | 16 | 40 | 64 | |
| Memory | 8 | 16 | 32 | 64 | 160 | 256 | |
| Concurrent Users | 70 | 150 | 310 | 630 | 1590 | 2550 | |
| Compute | m5.large | m5.xlarge | m5.2xlarge | m5.4xlarge | m5.12xlarge | m5.24xlarge | |
| Processor | 2 | 4 | 8 | 16 | 48 | 96 | |
| Memory | 8 | 16 | 32 | 64 | 192 | 384 | |
| Concurrent Users | 70 | 150 | 310 | 630 | 1910 | 3830 | |
| Compute | r4.large | r4.xlarge | r4.2xlarge | r4.4xlarge | r4.8xlarge | ||
| Processor | 2 | 4 | 8 | 16 | 32 | ||
| Memory | 7 | 13.5 | 27 | 53 | 99 | ||
| Concurrent Users | 60 | 125 | 260 | 520 | 980 | ||
| Compute | i3.large | i3.xlarge | i3.2xlarge | i3.4xlarge | i3.8xlarge | ||
| Processor | 2 | 4 | 8 | 16 | 32 | ||
| Memory | 7 | 13 | 27 | 53 | 99 | ||
| Concurrent Users | 60 | 120 | 260 | 520 | 980 | ||
| Compute | c3.large | c3.xlarge | c3.2xlarge | c3.4xlarge | c3.8xlarge | ||
| Processor | 2 | 4 | 8 | 16 | 32 | ||
| Memory | 3.75 | 7 | 15 | 30 | 60 | ||
| Concurrent Users | 28 | 60 | 140 | 290 | 590 | ||
| Compute | c4.large | c4.xlarge | c4.2xlarge | c4.4xlarge | c4.8xlarge | ||
| Processor | 2 | 4 | 8 | 16 | 36 | ||
| Memory | 3.75 | 7.5 | 15 | 30 | 60 | ||
| Concurrent Users | 28 | 65 | 140 | 290 | 590 | ||
| Compute | c5.large | c5.xlarge | c5.2xlarge | c5.4xlarge | c5.9xlarge | c5.18xlarge | |
| Processor | 2 | 4 | 8 | 16 | 36 | 72 | |
| Memory | 4 | 8 | 16 | 32 | 72 | 144 | |
| Concurrent Users | 30 | 70 | 150 | 310 | 710 | 1430 | |
| Compute | p2.xlarge | p2.8xlarge | p2.16xlarge | g3.4xlarge | g3.8xlarge | g3.16xlarge | |
| Processor | 4 | 32 | 64 | 16 | 32 | 64 | |
| Memory | 12 | 94 | 188 | 122 | 244 | 488 | |
| Concurrent Users | 110 | 930 | 1870 | 1210 | 2430 | 4870 | |
| Compute | r3.large | r3.xlarge | r3.2xlarge | r3.4xlarge | r3.8xlarge | ||
| Processor | 2 | 4 | 8 | 16 | 32 | ||
| Memory | 15.25 | 30.5 | 61 | 122 | 244 | ||
| Concurrent Users | 143 | 295 | 600 | 1210 | 2430 | ||
| Compute | i2.xlarge | i2.2xlarge | i2.4xlarge | i2.8xlarge | |||
| Processor | 4 | 8 | 16 | 32 | |||
| Memory | 30.5 | 61 | 122 | 244 | |||
| Concurrent Users | 295 | 600 | 1210 | 2430 |