Below is a table detailing the differences between ASAv sizes. The ASAv5 should be suitable for most use cases. However, referencing this article will ensure that the ASAv size chosen for your environment will have adequate resources to handle the demands placed on that environment.
| Feature | ASAv5 | ASAv10 | ASAv30 | ASAv50 |
|---|---|---|---|---|
| Stateful inspection throughput (maximum) | 100 Mbps | 1 Gbps | 2 Gbps | 10 Gbps |
| Stateful inspection throughput (multiprotocol) | 50 Mbps | 500 Mbps | 1 Gbps | 5 Gbps |
| AES VPN throughput | 30 Mbps | 125 Mbps | 1 Gbps | 3 Gbps |
| Connections per second | 8,000 | 20,000 | 60,000 | 120,000 |
| Concurrent sessions | 50,000 | 100,000 | 500,000 | 2,000,000 |
| VLANs | 25 | 50 | 200 | 1024 |
| Bridge groups | 12 | 25 | 100 | 250 |
| IPsec VPN peers | 50 | 250 | 750 | 10,000 |
| Cisco AnyConnect® or clientless VPN user sessions | 50 | 250 | 750 | 10,000 |
| Cisco Unified Communications phone proxy | 50 | 250 | 1000 | Not tested |
| Cisco Cloud Web Security users | 250 | 1,000 | 5000 | Not tested |
| Virtual CPUs | 1 | 1 | 4 | 8 |
| Memory | 1GB – 1.5 GB | 2 GB | 8 GB | 16 GB |
| Minimum disk storage | 8 GB | 8 GB | 16 GB | 16 GB |