Category Archives: Vmware
Troubleshooting The vMotion migration failed because the ESX host were not able to connect over the vMotion network.
Today I will take you thought the troubleshooting for vMotion using CLI, If you have not done network troubleshooting on esx host you will find some really good esxi commands on this post. And if you are using a converged infrastructure its important to understand end to end connectivity especially if you have different vlans for each service like vMotion FT, Management traffic and VM-Traffic.
I build a brand new Data Center and after configuring the dv switch I decided to test the vMotion first and this is the error I saw on the first attempt the vm was stuck at 14 % and after a while it gave the below error message.
as shown below:
Migrate virtual machine error message
If you read the above error message you will find the IP’s of the host which I am migrating from and to.
for example lets consider the below two host this troubleshooting is done on esx-02. vmnic2 is FT vmnic3 is vMotion so I am comparing the mac address of booth the host on the ucs service profile to compare tht the vnic template has the right mac address and if they are connected to the right vlan. Read the rest of this entry
I am sure many of us being Systems Administrator have struggled at time to keep the free space on Servers. especially the system partition on Windows 2003 Server right ?
Even after deleting the log files, some how the OS grows as it has to get its monthly security updates from Microsoft and other software installs .. etc.
I know, most people try to use DiskPart command line utility, but it does not work on the system partition or I should say OS partition in lay man’s term.
In the new OS like Windows 2008 pr 2008 R2 etc., we don’t need to worry about this as the OS has new feature to shrink or expand the system partition with out rebooting the server. which mean no down time.
So, how can we expand or extend the NTFS formatted C drive on 2003 Server with out rebooting it?
Solution is a utility called ExtPart from Dell. its a simple command line utility easy to use tool to expand or extend the size of your C drive provided you have more disk space or another partition that is un-formated.
The solution is to extract the binary after downloading on a 32 bit OS and use it on a 64 bit OS and its work.
Their you go! you can now expand the C drive with out rebooting the OS 🙂
the link given below takes you to Dell website what has the ExtPart utility :
Hope you find my post useful and if you have any question please feel free to comment below.
Most of the business today are choosing virtualization for Server consolidation, however along with that they get a lot more benefits:
- Reduce power and space requirement in data centres
- Fast application and service provisioning
- Improved manageability
- Business continuity
This clearly explains that the Businesses are focused to do server consolidation and reduction of power and space requirement which is the driving factors even today.
The types of virtualization do we currently have ? as discussed this on my previous post, I am going to compare them today.
According to surveys taken recently we have the following stats.
This clearly explains us that most of the Virtualization technologies are been used today, however still the most popular one is Server virtualization. Never the less this is taken on a different level today to get the Desktop virtualization for the end users companies like Citrix and VMware have got a lot of powerful products for this. Read the rest of this entry
As we all know today the main priority is cost savings in every organizations. Keeping this in mind majority of companies are seeking alternative method of saving cost.
One of the way which has become most popular today is consolidating IT infrastructure. That is by getting rid of old, crapey hardware that has been running for donkeys years! which keeps braking every fortnight. Also another concerning factor is space in the Data Center are already filled up, and companies cannot invest in setting up a new data centres, as it will involve huge investments.
So, most of the companys are looking into different types of virtualizations. They are 3 types of virtualizations which are avalable today.
- Hypervisor contains the Virtual Machine Monitor (VMM)
- Guest OS unchanged, Host can be any kind of hardware
- Guest uses generic device drivers
Hardware Virtualization (a.k.a. Hardware Assisted)
- VMM moved to hardware
- Requires VT hardware
- Guest OS unchanged, uses generic device drivers Read the rest of this entry
I have a question today?
How fussy are you to which Wi-Fi signal you connect? i.e., connecting to an open or a secure Wi-Fi connection.
As we know that most of the Coffey shops and pubs allow you to use the free Wi-Fi open connections. Do you even think twice before connecting to a open Wi-Fi signal?
Please put some time to understand what is the risk involved in using an open Wi-Fi connection.
I know getting internet connectivity when your out and about will look like a blessing. However all your data and your laptop itself can be compromised by anyone connecting to open Wi-Fi connections.
Some people think that having a Anti-Virus program or an Firewall enabled laptop will keep them safe, what they don’t know is when they setup the connection with an open Wi-Fi connection they have already established a trust relation with that router.
Windows 7 gives warning to the user that its very risky to connect to a Open and un-secure Wi-Fi networks yet most of the people I know still connect anyway.
Moreover I know a couple of friends who bought a wireless router and started using it without setting up of security key or changing the default admin password. Read the rest of this entry
Just spent some time installing the New RC edition of Ubuntu 10.10 also known as Maverick Meerkat. First thing that impressed me is the installation which took just 10 minutes, after giving some basic information and creating a standard user along with the system name.
I installed it on Vmware platform with only 512 mb of memory and 20 GB virtual disk space.
The system runs very smooth on such less configuration, the amazing thing even after the full install only 2.5 GB of disk space is utilized. Read the rest of this entry