| Feature/Requirement | Octopus | Co-Standby Server | Double-Take |
| One to One | Y | Y | Y |
| One to Many | Y | N | Y |
| Many to One | Y | N | Y |
| Many to Many | Y | N | Y |
| Focused on HA | Y | Y | Y |
| Focused on DR | Y | N | Y |
| Remote Replication | Y | N | Y |
| Distance Limitation (>10km) | N | Y | N |
| Identical Source & Target HW? | N | N | N |
| Windows 2000 Compatible | Y | Y | Y |
| Synchronous Block-based | N | Y | N |
| Asynchronous Delta-based | Y | N | Y |
| Low bandwidth required | Y | N | Y |
| Disk Writes to both at same time? | N | Y | N |
| Identity Switch at Fail-over? | Y | N | Y |
| Support for both NT and 2000 | Y | Y | Y |
| Support for Exchange, SQL | Y | Y | Y |
| Application Load Balancing | N | Y | N |
