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VMware vRealize Operations Manager Sizing Guidelines (2057607)


This knowledge base article provides the sizing guidelines for VMware vRealize Operations Manager (formerly known as vCenter Operations Manager) and can be used to help determine the configurations to be used during installation.


By default, we offer Small, Medium, and Large configurations during installation. If you want to manage more virtual machines, you can manually resize the vApp using these guidelines.

Template vApp VCPU vApp RAM (GB) UI VCPU UI RAM (GB) Analytics VCPU Analytics RAM (GB) Disk IOPS for Analytics Virtual Machine Disk Storage Virtual Machines Supported Full or Balanced Profile* Metrics Supported Notes
Small 4 16 2 7 2 9 1,500 900GB 1,500 Full 600,000
Medium 8 25 4 11 4 14 3,000 1.8TB 3,000 Full 1,100,000
Large 16 34 8 13 8 21 6,000 3.6TB 6,000 Full 2,500,000
Custom 1 (X Large) 16 47 8 26 8 21 12,000 7.2TB 12,000 Balanced 2,500,000 Memory is impacted both by the number of resources and the number of metrics. This requires an increase in memory relative to the Large template due to the increase in the number of resources.
Custom 2 (X Large) 40 89 16 26 24 64 12,000 7.2TB 12,000 Full 5,000,000 Double the metrics and double the resources relative to the Large template results in additional VCPU requirements.

Note: The sizing guidelines for vRealize Operations Manager (formerly known as vCenter Operations Manager) 5.8 are outlined in the attached spreadsheet.

* Whether you use a Full or Balanced profile, VMware recommends that you choose the Small, Medium, or Large template driven largely by the number of virtual machines. This is because, regardless of the metric reductions introduced with the use of the Balanced profile, the capacity analysis resource requirements remain for each virtual machine.

Please note that you need to limit the maximum configuration of the virtual machines that comprise your vRealize Operations appliance in accordance with the limits established by your version of vSphere in use.

Note: The default Hardware Version of the vRealize Operations Manager virtual machine is 7, limiting the maximum vCPUs selection to 8. You can upgrade the Hardware Version of the Analytics machine to increase the vCPU limit.

Additional Information

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