
VMware vSphere 6.x Datacenter Design Cookbook
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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, a Virtual Volume datastore, a Virtual SAN datastore, or a path on the local ESXi filesystem.
Design requirements, the 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:
Determine the number of virtual machines per datastore based on the capacity, performance, and recovery requirements.
Understand the impact the SCSI reservations may have on the datastore sizing.
Understand how the recovery time impacts the datastore sizing.
A design factor that was identified in Chapter 3, The Design Factors, specified that no more than 20 application servers should be...