| Hardware Specifications | Minimum Required | Recommended |
| Directory Connector | 500MB disk space | 1+GB disk space |
| 2GHz processor | 2- or 4-core processor | |
| 4GB memory | 8GB memory | |
| Mail Connector and/or Free/Busy Connector (for each) | 20GB disk space | 20GB disk space |
| 4-core 3+GHz processor | 8-core 3+GHz processor | |
| 4GB memory | 8-16GB memory |
