You can use the sizing guidelines for VMware Aria Operations (formerly known as vRealize Operations) to determine the configurations to be used during installation.
Recommended sizing for vRealize Operations 8.2 and later can be checked by inputting values on vropssizer.vmware.com, or by inputting values on the spreadsheet attached in the respective article.
For information about the sizing guidelines for vRealize Operations 6.0, 6.0.x, 6.1, 6.2.x, 6.3.x, 6.4, 6.5, 6.6.x, 6.7, 7.0, 7.5, 8.0.x, 8.1.x, 8.2, 8.3, 8.4, 8.5, 8.6, and 8.10.x, VMware Aria Operations 8.12.x, 8.14, 8.16, 8.17.x, 8.18 or VMware Aria Operations (SaaS) (formerly known as vRealize Operations Cloud) Cloud Proxy, access the KB articles listed in the following table: