You don't always choose the application layer. When you're an OpenStack cloud provider, your customers choose. When you're a customer using Open Source softwa

You don't always choose the application layer. When you're an OpenStack cloud provider, your customers choose. When you're a customer using Open Source software, your vendors choose. Using a mixture of directly attached NVMe and network-attached volumes with backup is the sweet spot for me. I don't need to maintain my own network filesystem (Ceph), and I can put applications that mirrors its database natively on NVMe and everything I don't have much control over on network-attached volumes. I feel like there's something better not yet made.