>If you're unsure if the cluster will grow to four or more, then deploy using the default policy. If you're sure your cluster will grow, then instead of expanding the cluster after your initial deployment, we recommend deploying the extra hosts during deployment. As the VMs are deployed to the cluster, change the disk's storage policy in the VM settings to either RAID-5 FTT-1 or RAID-6 FTT-2. In reference to [SLA for Azure VMware Solution](https://azure.microsoft.com/support/legal/sla/azure-vmware/v1_1/), note that more than 6 hosts should be configured in the cluster to use an FTT-2 policy (RAID-1, or RAID-6). Also note that the storage policy is not automatically updated based on cluster size. Similarly, changing the default does not automatically update the running VM policies.
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