





| 1. | Redundancy Clustering |
| 2. | Distributed Services |
| 3. | Scalability Clustering |


| 1. | At least 2 Mail Enable Servers |
| 2. | Simple DNS and Simple Failover Servers (2 sets recommended) |
| 3. | Smoothwall Firewall with Failover (3rd party Firewall with the same features may also be used for the system) |
| 4. | Storage Server (EONSTOR DS or ESVA from Infortrend recommended) |
| 5. | Novabackup as backup and disaster recovery recommended. File Replication PRO may also be used for real time file synchronization. |

| 1. | 2 Mail Enable Servers |
| 2. | Simple DNS (2 Servers recommended) |
| 3. | Novabackup as backup and disaster recovery recommended. File Replication PRO may also be used for real time file synchronization. |
| 1. | 2 or more Mail Enable Servers depending on the network requirement |
| 2. | Simple DNS and Simple Failover Servers (2 sets recommended) |
| 3. | Storage Server (EONSTOR DS or ESVA from Infortrend recommended) |
| 4. | Novabackup as backup and disaster recovery recommended. File Replication PRO may also be used for real time file synchronization. |






