Examining Shared Storage Fundamentals
vSphere 6.7 offers numerous storage choices and configuration options relative to previous versions of vSphere or to nonvirtualized environments. These choices and configuration options apply at two fundamental levels: the virtualization layer and the VM layer. The storage requirements for a vSphere environment and the VMs it supports are unique, making broad generalizations impossible. The requirements for any given vSphere environment span use cases include virtual servers, containers, desktops, templates, and virtual CD/DVD (ISO) images. The virtual server use cases vary from light-utility VMs with few storage performance considerations to the largest workloads possible, with incredibly important storage layout considerations.
Let's start by examining this at a fundamental level. Figure 6.1 shows a simple three-host vSphere environment attached to shared storage.
FIGURE 6.1 When ESXi hosts are connected to that same shared storage, they...
