That said, the system started out with 2 vCPUs so moving to 3 vCPUs wasn't a big deal.
For example, I've successfully been able to add CPUs to a running Windows Server 2008 R2 Enterprise and it was immediately recognized and usable without a reboot being necessary. Personally, I don't find VMware's compatibility guide all that accurate, particularly when it comes to adding virtual CPUs to running virtual machines. SUSE Linux Enterprise Server 11 – both hot adding RAM and vCPUs is supported. In a future post, I'll provide a significantly expanded list of operating systems that includes Linux systems, but it should be noted that hot adding RAM is pretty well supported in Linux – especially in newer versions of the kernel. I've pulled this information from VMware's support documentation. The chart below shows you a list of the Windows Server 2008-based operating systems that support particular hot-add features. Let's start by getting a look at the Microsoft-based guest operating systems that can support hot-add features found in ESX and ESXi 4.1. With the ability for ESX/ESXi-based virtual machines to hot add additional RAM and processors, the addition of these resources can be accomplished with exactly zero downtime, as long as you've taken the appropriate steps and your guest machine is running an operating system that supports this feature. In the physical world, adding resources such as RAM and processing power required a hardware order, downtime planning, installation and then hope that everything would continue to operate as it did before the upgrade, except with additional resources. physical infrastructure is the ease with which additional computing resources can be added to virtual machines.
One of the huge improvements found in virtual vs. What about memory information? If you have been tasked with gathering information or inventory of CPU types, memory configurations and other physical hardware present in the ESXi host, having the ability to get this information from the commandline becomes essential.There is no end to the benefits that can be wrought from a virtual infrastructure. What if you are remotely accessing the ESXi server and are unable to log into the web interface of the ESXi host for one reason or another and you need to know what type of CPU the host is configured with? Let’s think about a couple of use cases for that. You might wonder, when would I ever want to query physical hardware information about an ESXi host when I can get a lot of information from the vSphere Client? Use Cases of ESXi Commandline Tools for Physical Hardware Info Let’s take a look at VMware ESXi commandline get CPU and Memory Information. Have you ever wanted to know the details about CPU, memory, or other physical hardware? From time to time it is very handy to be able to gather some of these details from the VMware ESXi command line. There are times with your virtual infrastructure running on top of VMware vSphere that you need to gather information about the physical servers you are running on.