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There are two types of connections between CAVA servers and PowerScale nodes:
For each type of connection, OneFS has a different implementation for load balancing. The following sections explain these two methodologies in detail.
OneFS uses a dedicated IP pool and access zone to isolate all CAVA SMB connections from other workloads. Within this IP pool, SmartConnect is enabled to ensure that all SMB connections are evenly spread across all the nodes.
The rules and conditions of how CEE connections are balanced are:
The following example uses an environment with the following:
The calculation is as follows:
The layout for the connections is listed in Table 1.
| First CAVA Server | Second CAVA Server | Third CAVA Server | Fourth CAVA Server | Fifth CAVA Server | Sixth CAVA Server | Seventh CAVA Server |
First node | 5 | 5 | 5 | 5 |
|
|
|
Second node |
| 5 | 5 | 5 | 5 |
|
|
Third node |
|
| 5 | 5 | 5 | 5 |
|
Fourth node |
|
|
| 5 | 5 | 5 | 5 |
Fifth node | 5 |
|
|
| 5 | 5 | 5 |
Sixth node | 5 | 5 |
|
|
| 5 | 5 |
Seventh node | 5 | 5 | 5 |
|
|
| 5 |
Total | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
A more complicated example has an environment with the following:
The calculation is as follows:
The layout for the connections is listed in Table 2.
| First CAVA Server | Second CAVA Server | Third CAVA Server | Fourth CAVA Server | Fifth CAVA Server |
First node | 4 | 4 | 4 | 2 |
|
Second node |
| 4 | 4 | 4 | 2 |
Third node | 2 |
| 4 | 4 | 4 |
Fourth node | 4 | 2 |
| 4 | 4 |
Fifth node | 4 | 4 | 2 |
| 4 |
Sixth node | 4 | 4 | 4 | 2 |
|
Seventh node |
| 2 | 2 | 4 | 4 |
Total | 18 | 20 | 20 | 20 | 18 |