Refer to the configuration maximum numbers for the management products as you add tenant workloads to the SDDC.

Table 1. Workload Scale Numbers

Number

Comments

1,024

Maximum number of workloads per ESXi host

1,500

Maximum number of workloads before you transition from Consolidated SDDC to Standard SDDC according to VMware Validated Design.

2,000

Maximum number of workloads per vCenter Server instance protected by using vSphere Replication.

4,096

Maximum number of workloads in a 4-node compute cluster in accordance with the initial configuration of VMware Validated Design.

5,000

Maximum number of workloads per Site Recovery Manager instance protected by using array-based replication.

6,000

Maximum number of workloads per workload domain according to VMware Validated Design.

6,000

Maximum number of workloads before you change the virtual hardware configuration of the vRealize Operations Manager remote collectors to 4 CPU and 16 GB RAM.

According to VMware Validated Design, you place the vRealize Operations Manager collectors dedicated to a workload domain in the workload domain. As a result, you can keep the same hardware configuration of the vRealize Operations Manager remote collectors if you follow the 6,000 workloads per workload domain recommendation in VMware Validated Design.

6,400

Maximum number of virtual machines per vSAN datastore.

8,000

Maximum number of workloads per cluster.

10,000

Original design goal for a Standard SDDC according to VMware Validated Design

10,000

Maximum number of workloads before you change the virtual hardware configuration of the vRealize Business server from 8 GB RAM to 12 GB RAM.

12,000

Maximum number of workloads before you change the virtual hardware configuration of the vRealize Operations Manager analytics nodes to 16 CPU and 48 GB RAM.

20,000

Maximum number of workloads before you change the virtual hardware configuration of vRealize Business server from 12 GB RAM to 16 GB RAM.

25,000

Maximum number of workloads in a single workload domain

25,500

Maximum number of workloads before you change the initial virtual hardware configuration of the vRealize Operations Manager analytics nodes in VMware Validated Design to Large.

30,000

Maximum number of workloads before you remove vRealize Business from the solution to continue scaling.

49,500

Maximum number of workloads before you change the virtual hardware configuration of the vRealize Operations Manager analytics nodes specification to Extra Large.

50,000

Maximum number of workloads in a single vCenter Single Sign-On domain. You must add more vCenter Single Sign-On domains.

75,000

Maximum number of workloads in a VMware vRealize® Automation™ instance.

120,000

Maximum number of workloads before you add a vRealize Operations Manager analytics node.
Table 2. Scale Numbers for Workload Domains

Number

Comments

1

Maximum number of workloads domains that a vRealize Automation IaaS Proxy Agent server can handle before you change the virtual hardware configuration of the node to 4 CPU and 16GB RAM.

According to VMware Validated Design, you place a dedicated pair of vRealize Automation IaaS Proxy Agents in each workload domain.

10

Maximum Platform Services Controller instances per vCenter Single Sign-On domain.

Relevant when deploying new regions with new Platform Services Controller instances in the same vCenter Single Sign-On domain.

12

Maximum number of workloads domains that vRealize Business can scale across without the use of vRealize Business remote data collectors.

15

Maximum number of workload domains in a single vCenter Single Sign-On domain.

17

Maximum number of workload domains that vRealize Business can scale across with the use of vRealize Business remote data collectors.

20

Maximum number of workload domains registered with a single vRealize Automation instance.

100 ms

Maximum latency in milliseconds between linked vCenter Server instances.
Table 3. Cluster Scale Numbers

Number

Comments

64

Maximum number of nodes in a vSphere cluster.
Table 4. Scale Numbers for Operations and Cloud Management

Number

Comments

6

Maximum number of vRealize Operations Manager analytics nodes of Extra Large specification.

8

Maximum number of vRealize Operations Manager analytics nodes of Medium specification.

10

Maximum number of vRealize Log Insight forwarders per instance.

12

Maximum number of member nodes of the vRealize Log Insight cluster.

15

Maximum number of vCenter Server instances connected to a vRealize Log Insight node.

16

Maximum number of vRealize Operations Manager analytics nodes of Large specification.

60

Maximum number of vRealize Operations Manager remote collectors.

15,000

Maximum number of events-per-second that can be processed by a vRealize Log Insight node.

Example for Scaling to 22,000 Workloads

You implemented a standard SDDC according to VMware Validated Design. The SDDC contains 4 hosts in the initial workload domain cluster and you can deploy up to 4,096 workloads. You want to scale the number of workloads to 22,000.

Use Workload Scale Numbers for your scaling plan.

  1. Add a host for every 1,024 workloads.

  2. As you intend to exceed 6,000 workloads, consider these increments.

    1. Decide if you are going to add a vCenter Server instance for every 6,000 workloads or create a different building block with more than 6,000 workloads per workload domain.

    2. Scale up the compute resources for the remote collectors for vRealize Operations Manager to 4 CPU and 16 GB RAM.

  3. Provision one or more additional clusters.

    1. For a workload domain with vSAN primary storage, as you intend to exceed 6,400 workloads, provision an additional cluster per 6,400 workloads.

    2. For a workload domain with primary storage other than vSAN, as you intend to exceed 8,000 workloads, provision an additional cluster per 8,000 workloads.

  4. As you intend to exceed 10,00 workloads, scale up the vRealize Business server to 12 GB RAM.

  5. As you intend to exceed 12,000 workloads, scale up the analytics nodes of vRealize Operation Manager to 16 CPU and 48 GB RAM.

  6. As you intend to exceed 20,000 workloads, scale up the vRealize Business server again, to 16 GB RAM.

If you intend to scale to the end state design all in one go, skip Step 4 and scale up the vRealize Business server once according to the last step.