Nov 17 2016

VMware vCenter Server 6.5 Resource Requirements

Just a quick blog post about the vCenter Server 6.5 Appliance resource requirements in terms of vCPUs, RAM and Storage per deployment size option. And yes, this is mostly for my personal documentation purposes since the information can also be found in the VMware vSphere 6.5 official documentation,

Anyway, the following Deployment Sizes are available:

  • Tiny
  • Small
  • Medium
  • Large
  • X-Large

ESXi host and Virtual Machine capacity per Deployment Size

The below table lists the ESXi host and VM capacity per vCSA 6.5 deployment size

Deployment SizevCPUsRAM (GB)

Compute requirements per Deployment Size

The below table lists the compute (CPU and RAM) requirements per deployment size.

Deployment SizeESXi HostsVMs
Small1001 000
Medium4004 000
Large1 00010 000
X-Large2 00035 000

Storage requirements per Deployment Size

The below table lists the storage requirements per deployment size

Deployment SizeStorage Size Default (GB)Storage Size Large (GB)Storage Size Large (GB)
Tiny2507751 650
Small2908201 700
Medium4259251 805
Large6409901 870
X-Large98010301 910



  1. vikrant

    Great article, I have really enjoyed your article. I am looking for installation of VMware vCenter Server 6.5 but I was little bit confused about the resource requirements for installation but now you have cleared my all the doubts . You show me the correct information. Thanks for sharing . The way you explained each and everything about VMware vCenter Server 6.5 Resource Requirements is really great. Thanks once again.

  2. vivath

    For vCenter server appliance Large edition, can i use with embedded PostgreSQL or I have to use with External DB.
    For external DB, beside Oracle and Microsoft SQL server, Can I use MySQL or External PostgreSQL?

    thx you.

  3. magander3

    VCSA embedded PosgtgreSQL DB can manage 2000 ESXi hosts and 35 000 VMs. Check https://pubs.vmware.com/vsphere-65/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-65-installation-setup-guide.pdf?src=vmw_so_vex_mande_12

    MSSQLand Oracle are your options for external DBs. Check http://partnerweb.vmware.com/comp_guide2/sim/interop_matrix.php?src=vmw_so_vex_mande_12


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