A datastore is a logical representation of storage presented to an ESXi host where virtual machine files are stored. A datastore can be a VMFS formatted volume, an NFS export, or a path on the local ESXi filesystem.
Design requirements, virtual machine disk size, IOPS, and recovery are all factors that can determine the number of virtual machines to store on a single datastore. The size of the datastore is calculated based on the number of virtual machines per datastore and the size of the virtual machines.
A design factor that was identified in Chapter 3, The Design Factors, specified that no more than 20 application servers should be affected by a hardware failure. Applying the same requirement to datastore...