Configuring software ISCSI on VMware vSphere 5.X (ESXi 5.X).

Step by step Configuring software ISCSI on VMware vSphere 5.X (ESXi 5.X) tutorial.

Connect to vCenter and click on ESXi host and go to configuration and networking.
Create vSwitch with VM Kernel port group and Map to a available VMNIC as shown in the below screen shot.









Go to storage adapter and click on Add, Select Add Software iscsi adapter and click ok.









Click on the properties tab and go to Network configuration tab,
Click on Add and Add the Switch that we have configured for ISCSI, as below.






Now click on the ISCSI software adapter in the configuration tab and go to properties.









Now click on the Dynamic Discovery tab, in the iSCSI Initiator Properties.
Click on Add and provide the details of iSCSI server and click ok, as below.



















We are done with the software iSCSI configuration for the ESXI 5.X host.

For testing the configured iSCSI setting, present a LUN from the array and go to configuration and click on storage view.
Click on add storage and select Disk/Lun type and click next you will see the LUN detected as below.









So now your successfully configure Software iSCSI for the ESXi host.

Error configuration issue shell and ssh has been enabled in the summary tab VMware vSphere 5 (ESXI5.X)

Error:-
Configuration issue
ESXI shell for the host has been enabled.
SSH for the host has been enabled.

Screenshot:-
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Solution:
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Connect the ESXi host directly via vSphere client or connect to vCenter via vsphere Client.

Select the ESXi host and click on configuration tab as below.





Click on advanced setting and go to UserVars.
Search for UserVars.SuppressShellWarning and change the value from 0 to 1 as below.





Click ok to complete the configuration and take effect, now you will notice the alert disappearing in the summary tab.





Applicable for VMware ESX 4.1.x,VMware ESXi 4.1.x Embedded,VMware ESXi 4.1.x Installable,VMware ESXi 5.0.x,VMware vCenter Server 5.0.x

Referrence : VMware KB

http://kb.vmware.com/kb/2007922

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Vmware vSphere Network Performance troubleshooting tips

There are lot of contributing factor for virtual machine performance issue and was looking at all the factors affecting the virtual machine performance, one of them which comes here with major share is to be networking and though of sharing few tips, which were useful for my troubleshooting and will help others also..

1. Verify that virtual machines are installed with the latest version of VMware tools

2. VMware recommends using multiple NICs on the associated virtual switch to increase the overall network capacity, for port groups that contain many virtual machines or several virtual machines that are very active on the network
-http://kb.vmware.com/kb/1004088

3. Verify the speed and duplex settings of the installed network adapters
- http://kb.vmware.com/kb/1004089

4. Verify that the port group and virtual switch are not configured for promiscuous mode
Note :- Promiscuous mode is disabled by default, should not be turned on unless specifically needed.
- http://kb.vmware.com/kb/1004099

5. verify the integrity of the physical network adapters
- http://kb.vmware.com/kb/1003686

6. Verify that your host is not overloaded. networking relies on available processor resources. If the CPUs on the host are beign used at capacity, network performance suffers.

7. Verify that you have chosen the appropriate network driver for your virtual machine based on your needs.
- Choosing Network Adapter for your VM - http://kb.vmware.com/kb/1001805