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Wont hurt anything, just wont be able to access the management. &nbsp;You would have to simply fire vCenter backup in order to gain access to it again. &nbsp;If this is a VM on a host you would use vsphere and connect directly to the host VCenter is running on in order to power it back up.
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Can I shut the vCentre server in esxi5.1 environment? Is there any issue if I shut the vcentre server for half an hour for maintenance? My cluster is configured with HA and DRS manual.
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Can I shut the vCentre server in esxi5.1 environment? Is there any issue if I shut the vcentre server for half an hour for maintenance? My cluster is configured with HA and DRS manual.

vcentre server

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.