Selecting the right instance in AWS to match the required performance needed by an email security appliance could be a challange, given the amount of different optimized istances available on AWS.
Our best recommendation for a small-medium deployment is:
Instance: Choose c6i.large (Intel)
CPU: 2 CPU
RAM: 4Gb
Main root/system disk: gp3
Quarantine and DB Disk: gp3 with fixed Throughput (200 MB/s min provisioned)
If you need more power:
Instance: Choose c6i.xlarge (Intel)
CPU: 4 CPU
RAM: 8Gb
Main root/system disk: gp3
Quarantine and DB Disk: gp3 with fixed Throughput (250 MB/s min provisioned)
The AMI is available in AWS Marketplace:
Estimated Total Monthly Cost Comparison (Ai generated, May 2026)
| Component | c6i.xlarge (4 vCPU / 8 GB) | c6i.large (2 vCPU / 4 GB) |
| Compute | $124.10 | $62.05 |
| Storage (60 GB Total) | $4.80 | $4.80 |
| Performance (Extra IOPS/Throughput) | $10.00 | $4.00 |
| Total Estimate | $138.90 / month | $70.85 / month |