Enabling Storage I/O Control (SIOC)
As with sharing computing resources amongst the running virtual machines, you can share the I/O bandwidth to a LUN amongst the virtual machines. Based on the shares set on the virtual disks residing on the SIOC-enabled datastores, SIOC will throttle the VMkernel LUN queue depth during contention. In this recipe we will learn how to enable SIOC on a datastore.
How to do it...
SIOC has to be enabled on each datastore. The following procedure explains how to achieve the same:
From the inventory Home, click on Storage.
Select a datastore from the inventory and navigate to Manage | Settings, and edit the datastore capabilities:
In the Configure Storage I/O Control window, select the Enable Storage I/O Control checkbox. Unless you want to modify the Congestion Threshold criteria and its value, you can leave the Percentage of peak throughput value at its default of 90%. You can also set the Congestion Threshold to be the latency. By default the latency threshold value...
