In the previous chapter, we learned how to configure and manage access to Fiber Channel (FC), Internet Small Computer System Interface (iSCSI), and Network File System (NFS) storage devices. Once we present storage devices to the ESXi host or a cluster of ESXi hosts, the business will start using the provisioned storage by hosting virtual machine (VM) data on them.
As time progresses, more and more VMs are added to the mix and consume storage capacity in terms of space and throughput. Hence, it becomes important to not only fine-tune the process of placing the VMs on datastores backed by the correct type of storage tier, but to also control the space and bandwidth utilization between the VMs.
Storage I/O Control (SIOC) is one of the mechanisms to use to ensure a fair share of storage bandwidth allocation to all VMs running on shared...