New vSphere release and new hardware and software requirements. Below you can find requirements for both vCenter server 6.5 appliance and vCenter server 6.5 on Windows.
vCenter Server 6.5 for Windows requirements:
Hardware:
Link to VMware documentation
Storage:
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vCenter Server with an Embedded Platform Services Controller
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vCenter Server with an External Platform Services Controller
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External Platform Services Controller
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Program Files
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6 GB
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6 GB
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1 GB
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ProgramData
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8 GB
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8 GB
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2 GB
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System folder (to cache the MSI installer)
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3 GB
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3 GB
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1 GB
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Software:
See http://kb.vmware.com/kb/2091273.
Database:
You can use embedded PostgreSQL DB for environments up to 20 hosts and 200 VMs. If you have bigger environment you should use external DB. To find full list of supported DB, see http://www.vmware.com/resources/compatibility/sim/interop_matrix.php
vCenter Server 6.5 appliance
Hardware
Tiny environment (up to 10 hosts or 100 virtual machines)
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2
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10 GB
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Small environment (up to 100 hosts or 1,000 virtual machines)
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4
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16 GB
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Medium environment (up to 400 hosts or 4,000 virtual machine)
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8
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24 GB
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Large environment (up to 1,000 hosts or 10,000 virtual machines)
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16
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32 GB
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X-Large environment (up to 2,000 hosts or 35,000 virtual machines)
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24
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48 GB
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Storage:
Tiny environment (up to 10 hosts or 100 virtual machines)
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250 GB
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775 GB
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1650 GB
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Small environment (up to 100 hosts or 1,000 virtual machines)
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290 GB
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820 GB
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1700 GB
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Medium environment (up to 400 hosts or 4,000 virtual machine)
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425 GB
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925 GB
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1805 GB
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Large environment (up to 1,000 hosts or 10,000 virtual machines)
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640 GB
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990 GB
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1870 GB
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X-Large environment (up to 2,000 hosts or 35,000 virtual machines)
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980 GB
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1030 GB
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1910 GB
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Software
The VMware vCenter Server Appliance and Platform Services Controller appliance can be deployed on ESXi hosts 5.5 or later, or on vCenter Server instances 5.5 or later.
vSphere Web Client software requirements:
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Windows
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Microsoft Internet Explorer v. 10.0.19 to 11.0.9600.
Mozilla Firefox v. 34 to 49.
Google Chrome v. 39 to 53.
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Mac OS
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Mozilla Firefox v. 34 to 49.
Google Chrome v. 39 to 53.
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Appendix