Performance Metrics Related to NAT Firewall Access Quantities
| **Mode** | **Machine Specification** | **Maximum Number of Connected VPCs** | **Maximum Number of EIPs** | **NAT Gateway** |
|---|---|---|---|---|
| New mode | Instance with less than 6 million RPS (4 cores and 8 GB) | 8 | 8 | / |
| Instance with more than 6 million RPS (over 8 cores and 16 GB) | 10 | 8 | / | |
| Access mode | Instance with less than 6 million RPS (4 cores and 8 GB) | 4 | / | 4 |
| Instance with more than 6 million RPS (over 8 cores and 16 GB) | 5 | / | 5 |