You allocate storage capacity for analytics data collected from the management products and from the number of tenant virtual machines that is defined in the objectives of this SDDC design.

This design uses medium-size node for the analytics cluster and standard-size node for the remote collector group. A vRealize Operations Manager node of a medium size requires 235 GB of free space for data. To collect the required number of metrics, you can use the default storage capacity of the node.

Sizing Storage for the Analytics Cluster Nodes

The analytics cluster processes a large number of objects and metrics. As the environment expands, the need to add more data nodes to the analytics cluster will emerge. To plan the sizing requirements of your environment, refer to the vRealize Operations Manager sizing guidelines in VMware Knowledge Base article 2093783.

Table 1. Design Decision on the Storage Size of the Analytics Cluster of vRealize Operations Manager
Decision ID Design Decision Design Justification Design Implication
CSDDC-OPS-MON-006 Do not add more storage to the analytics cluster node. According to the sizing calculator, the default capacity of a medium-size node provides enough storage to collect metric data for the initial 500 virtual machines. None.

Sizing Storage for the Remote Collector Nodes

Deploy the remote collector nodes with thin-provisioned disks. Because remote collectors do not perform analytics operations or store data, the default VMDK size is sufficient.

Table 2. Design Decision on the Storage Size of the Remote Collector Nodes of vRealize Operations Manager
Decision ID Design Decision Design Justification Design Implication
CSDDC-OPS-MON-007 Do not provide more storage for remote collectors. Remote collectors do not perform analytics operations or store data on disk. None.