Description

It is necessary to automatically add CPU and memory resources to the virtual machine during peak business hours to ensure the normal use of business systems.

Precautions

1. Automated hot add can only increase resources, not able to automatically reduce them.
2. Automated hot-added resources will become invalid after the virtual machine is restarted.
3. The maximum value of automated hot add is the configuration size (the original configuration *2). The CPU increases the number of cores in one slot in the original configuration each time, and the memory is 1/8 of the configuration, rounded up, and the unit is GB.
4. VM template and virtual network devices do not support automated hot add.

Prerequisites

The operating system needs to support automated hot add. The list of specific operating systems is as follows.

1. Operating Systems that support automated hot add of memory.

Table 9:List of OS that supports hot add memory

2. Operating System that supports automated hot-adding of CPUs.

Table 10:List of OS that supports hot add CPUs

Steps

1. Enter the virtual machine editing page, click Processor and check the Enable CPU hot add checkbox.

2. On the Memory configurations, check the Enable memory hot add checkbox.
3. Go to Reliability > Automated Hot Add, check the Enable automated memory/CPU hot add checkbox, and configure Resource, Trigger, and Sensitivity Level.

4. Configure the virtual machines that require automated hot add and configure the conditions for automated hot add.