# Solution sizing
By default, the Ansible playbooks create VMs according to the following recommended specifications. You can override these recommended values in the configuration files, as detailed in the section Configuring the solution.
# Admin cluster nodes
For high resiliency requirements, we recommend deploying HPE SimpliVity clusters with three (or more) nodes with admin and user cluster components spread across the three nodes.
| VM | Number | OS | Sizing | Comments |
|---|---|---|---|---|
| Rancher nodes | 3 | Ubuntu 18.04 | 2x vCPU 8GB RAM 60GB disk space | Three nodes are deployed by default. |
# Load balancers
Two load balancer VMs are configured by default.
| VM | Number | OS | Sizing | Comments |
|---|---|---|---|---|
| Load balancers | 2 | Ubuntu 18.04 | 2x vCPU 8GB RAM 60GB disk space | Two load balancers are deployed by default. You can configure one (no HA) or 0 where you use your own existing load balancers |
# Support node
A single VM is configured to provide DHCP services
| VM | Number | OS | Sizing | Comments |
|---|---|---|---|---|
| Support | 1 | Ubuntu 18.04 | 2x vCPU 8GB RAM 60GB disk space | Single node for DHCP |
# User cluster
By default, one master and two worker nodes are deployed.
| VM | Number | OS | Sizing | Comments |
|---|---|---|---|---|
| Master | 1 | Ubuntu 18.04 | 2x vCPU 8GB RAM 60GB disk space | |
| Worker | 2 | Ubuntu 18.04 | 2x vCPU 8GB RAM 60GB disk space |