Hot Add (manual) and hot Add (automatic) for virtual machines

Virtual machine Support Hot add feature everyone should be familiar with, including VMware, Microsoft, Citrix and parallels and other manufacturers of related products are introduced this feature, when you receive the demand, add CPU, memory, disk and other resources, is to the late night to the machine room under the screw accessories, Still willing to click a few mouse in front of the computer or knock a few commands to fix, haha, self-evident.

In the case of the VMware vsphere Suite, the following conditions are required to change the CPU hot-swappable settings through the vsphere client.

For best results, use the hardware version 8 virtual machines.

Only hardware version 8 virtual machines support hot-add multicore virtual CPUs.

Not all client operating systems support CPU hot Add. If the client is not supported, you can disable these settings.

To use the CPU Hot add feature for a hardware version 7 virtual machine, set the kernel number of each slot to 1.

Adding CPU resources to a running virtual machine (CPU hot-swappable enabled) causes all USB Passthrough devices connected to the virtual machine to disconnect and reconnect.

Prerequisite conditions

Verify that the virtual machine is running under the following conditions:

VMware Tools is installed successfully. This condition is required for hot-swappable features of the Linux client operating system. (This one is open for discussion, in the following detail)

The virtual machine has a client operating system that supports CPU hot-swappable.

The virtual machine is currently using hardware version 7 or later.

The virtual machine is powered off. (Power off to enable hot add in virtual machine configuration options)

Required privileges: Virtual machines on virtual machines. Configuration. Settings

Because the Linux system is typical, here's how to analyze my title.

1. See the parallels Company's products for the Redhat system virtual machine Hot Add function support chart, green support, almost only support 6.0 version 64-bit hot add, as shown in Figure 1-1.

Figure 1-1 Parallels Product support chart