In the previous section, you learned how to use storage in a vSphere environment. Now, according to the following rule, we'll design our vSphere storage architecture.
Service-level agreement (SLA) defines the standard (storage-driven profile or virtual machine profile). Let the virtual machine store in the storage that meets the demand of its need.
The most commonly discussed aspect of shared storage (LUN / data store) sizing is what limit should be implemented on the number of VMs per data store. The reason for limiting this number is to minimize the potential for excessive SCSI locking. Most mainstream storage vendors will provide VMware-specific guidelines for this limit, and VMware recommends an upper limit of five to eight VMs per VMFS, regardless of the storage platform. In many cases, it is forgotten that the number of VMs per LUN is also influenced by the size and I/O requirements...