Using the vSphere web client, select the virtual machine. For example, select vCenter Management and in the navigation tree on the left select the virtual machine.
Right-click a virtual machine in the inventory and select Edit Settings.
Click the Virtual Hardware tab and expand Hard Disk.
Select a virtual hard disk from the list.
Under Shares, click the drop-down menu and select the relative amount of shares to allocate to the virtual machine (Low, Normal or High). You can select Custom to enter a user-defined shares value. Higher shares allow a virtual machine to keep more concurrent I/O operations pending at the storage device or datastore compared to a virtual machine with lower shares.
Under Limit — IOPS, click the drop-down menu and enter the upper limit of storage resources to allocate to the virtual machine. By default, IOPS are unlimited. You can selectLow (500), Normal (1000), or High (2000), or you can select Custom to enter a user-defined number of shares.
Click OK.
Next Steps
If doing as part of installing a new virtual machine, continue with any further profiling required. When completed, start the virtual machine (see Powering On a VMware virtual machine).
