6.0.1

4 Click OK.
Edit Configuration File Parameters
You can change or add virtual machine configuration parameters when instructed by a VMware technical
support representative, or if you see VMware documentation that instructs you to add or change a
parameter to fix a problem with your system.
IMPORTANT Changing or adding parameters when a system does not have problems might lead to
decreased system performance and instability.
The following conditions apply:
n
To change a parameter, you change the existing value for the keyword/value pair. For example, if you
start with the keyword/value pair, keyword/value, and change it to keyword/value2, the result is
keyword=value2.
n
You cannot delete a configuration parameter entry.
CAUTION You must assign a value to configuration parameter keywords. If you do not assign a value, the
keyword can return a value of 0, false, or disable, which can result in a virtual machine that cannot power
on.
Procedure
1 Right-click a virtual machine in the inventory and select Edit Settings.
2 Click the VM Options tab and expand Advanced.
3 Click Edit Configuration.
4 (Optional) To add a parameter, click Add Row and type a name and value for the parameter.
5 (Optional) To change a parameter, type a new value in the Value text box for that parameter.
6 Click OK.
Configure Fibre Channel NPIV Settings
N-port ID virtualization (NPIV) provides the ability to share a single physical Fibre Channel HBA port
among multiple virtual ports, each with unique identifiers. This capability lets you control virtual machine
access to LUNs on a per-virtual machine basis.
Each virtual port is identified by a pair of world wide names (WWNs): a world wide port name (WWPN)
and a world wide node name (WWNN). These WWNs are assigned by vCenter Server.
For detailed information on how to configure NPIV for a virtual machine, see vSphere Storage.
NPIV support is subject to the following limitations:
n
NPIV must be enabled on the SAN switch. Contact the switch vendor for information about enabling
NPIV on their devices.
n
NPIV is supported only for virtual machines with RDM disks. Virtual machines with regular virtual
disks continue to use the WWNs of the host’s physical HBAs.
n
The physical HBAs on the ESXi host must have access to a LUN using its WWNs in order for any
virtual machines on that host to have access to that LUN using their NPIV WWNs. Ensure that access is
provided to both the host and the virtual machines.
n
The physical HBAs on the ESXi host must support NPIV. If the physical HBAs do not support NPIV,
the virtual machines running on that host will fall back to using the WWNs of the host’s physical HBAs
for LUN access.
vSphere Virtual Machine Administration
162 VMware, Inc.