Please contact vikram.gupta@nutanix.com for assistance
Here is the Nutanix Files Sizing Guide
Adjusting nodes manually
In case you are doing a manual sizing you want to make sure it meets N+1 resiliency.
This is easy to check and adjust if needed.
Go to manual sizing and decrement the node count.
Two things to keep in mind
- The minimum number of nodes for Files is 4 as there is a FSVM on three nodes and 4th node is needed for N+1 (one node can be taken offline and still 3 nodes to run the 3 FSVMs). So 4 nodes are needed independent of capacity.
- Second, like any Nutanix cluster you want to make sure you still are at N+1. Here is table that shows you max HDD utilization (Files is a HDD heavy workload) you want to assure N+1. For example, if you have 6 nodes and the HDD utilization is UNDER 75% you can be assured that you are at N+1. Here the N+0 target (utilization after lose a node) is 90%, meaning with a node offline the utilization is 90% or less.
| Node | N+0 Utilization Target | Max Threshold for N+1 |
| 4 | 90% | 67.50% |
| 5 | 90% | 72.00% |
| 6 | 90% | 75.00% |
| 7 | 90% | 77.14% |
| 8 | 90% | 78.75% |
| 9 | 90% | 80.00% |
| 10 | 90% | 81.00% |
| 11 | 90% | 81.82% |
| 12 | 90% | 82.50% |
| 13 | 90% | 83.08% |
| 14 | 90% | 83.57% |
| 15 | 90% | 84.00% |
| 16 | 90% | 84.38% |
| 17 | 90% | 84.71% |
| 18 | 90% | 85.00% |
| 19 | 0.9 | 85.26% |
| 20 | 0.9 | 85.50% |
| 21 | 0.9 | 85.71% |
| 22 | 0.9 | 85.91% |
| 23 | 0.9 | 86.09% |
| 24 | 0.9 | 86.25% |
| 25 | 0.9 | 86.40% |
| 26 | 0.9 | 86.54% |
| 27 | 0.9 | 86.67% |
| 28 | 0.9 | 86.79% |
| 29 | 0.9 | 86.90% |
| 30 | 0.9 | 87.00% |