| Up to 1000 Users | [1K](../reference_architectures/1k_users.md) | Single Instance for all of GitLab | Already Integrated as a Service | Local Disk | 0 |
| Up to 2999 Users | [2K](../reference_architectures/2k_users.md) | Horizontally Scaled GitLab Instance (Non-HA) | Single Gitaly Server | Local Disk of Gitaly Instance | 1 |
| 3000 Users and Over | [3K](../reference_architectures/1k_users.md) | Horizontally Scaled GitLab Instance with HA | Gitaly Cluster | Local Disk of Each Gitaly Instance | 8 |
| 3000 Users and Over | [3K](../reference_architectures/3k_users.md) | Horizontally Scaled GitLab Instance with HA | Gitaly Cluster | Local Disk of Each Gitaly Instance | 8 |
| RTO/RPO Requirements for AZ Failure Tolerance Regardless of User Scale | [3K (with downscaling)](../reference_architectures/3k_users.md) | Custom (1) | Gitaly Cluster | Local Disk of Each Gitaly Instance | 8 |
1. If you feel that you need AZ Failure Tolerance for user scaling lower than 3K, please contact Customer Success