Our primary use case is to back up our virtual machines.
We have a hyper-converged infrastructure with Nutanix, made up of three servers with VMware ESXi and a virtual machine with a VMware vCenter appliance.
We have a QNAP NAS with Nakivo Backup & Replication installed. Every day, we create a backup of all the virtual machines. The entire infrastructure is connected with two switches in the stack, in high availability. Every link is 10GBase-LX4 and is redundant.