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I have an esxi hosts with vm appliance. Some of the appliance from software vendors which do not have vmtools.<br />
I also have cents based server. <br />
Will i be able to bring the esxi hosts to maintenance mode if appliance do not have vmtools?<br />
I noticed that one time the esxi host stayed at 2%.
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I have an esxi hosts with vm appliance. Some of the appliance from software vendors which do not have vmtools.
I also have cents based server. 
Will i be able to bring the esxi hosts to maintenance mode if appliance do not have vmtools?
I noticed that one time the esxi host stayed at 2%.

vmtools and Entering into maintenance mode.

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.