|---------------------------------|
| Physical Ds Server |            |
|--------------------| Ds Cluster |
| Virtual Ds Server  |            |
|---------------------------------|

|---------------------------------|
| Physical Ap Server |            |
|--------------------| Ap Cluster |
| Virtual Ap Server  |            |
|---------------------------------|

|---------------------------------|
| Physical Pg Server |            |
|--------------------| Pg Cluster |
| Virtual Pg Server  |            |
|---------------------------------|