• The controller and the device software versions should be the same, to achieve the following scale.

• *For a larger dataset per day, run Stats on all the servers.

• ** Along with the SAIE, the following statistics are also considered in the recommendations:

  • Approute

  • Performance Monitor

• The number of days the data can be stored in Cisco Catalyst SD-WAN Manager, depends on per-day processing volume of the device nodes. To store the data for a longer time or to accommodate the increase in per-day processing volume, use the following formulas to calculate the required Cisco Catalyst SD-WAN Manager disk size:

• Formula to calculate the Cisco Catalyst SD-WAN Manager disk size required for single node and cluster deployments: (Data per day × number of days) + 500 GB buffer . For example, if the data per day is 100 Gigabytes and the number of days the data must be stored is 10, then the required Cisco Catalyst SD-WAN Manager disk size is 1.5 Terabytes.

Maximum tested disk size for On-prem is 10 TB per instance.

Starting from Cisco vManage Release 20.6.1, you can achieve the above mentioned storage size numbers by modifying the aggregated SAIE size. The aggregated SAIE size is unidimensional and varies when the deployment includes edge devices that run on a mix of releases (Cisco SD-WAN Release 20.6.x and earlier releases). The aggregated SAIE also varies when on-demand troubleshooting is enabled for the devices.

Ensure that both the SAIE and aggregated SAIE index sizes are configured to enable on-demand troubleshooting.

To modify the aggregated SAIE value,

1. From the Cisco SD-WAN Manager menu, choose Administration > Settings.

2. Click Edit next to Statistics Database Configuration.

3. Modify the Aggregated SAIE size to the desired value based on your SAIE traffic, the default disk size allocation is 5 GB.

When SAIE is enabled, you must set the Statistics Collection timer to 30 minutes or higher.

To set the Statistics Collection timer,

1. From the Cisco SD-WAN Manager menu, choose Administration > Settings.

2. Click Edit next to Statistics Configuration.

3. Modify the Collection Interval minutes to the desired value based on your SAIE traffic, the default collection interval is 30 minutes.

4. Click Save.

• The tested and recommended limit of supported Cisco Catalyst SD-WAN Validator instances in a single Cisco Catalyst SD-WAN overlay are eight, similarly the maximum number of tested Cisco SD-WAN Controller instances is twelve.

• The required number of vCPUs and RAM for Cisco Catalyst SD-WAN Validator and Cisco Catalyst SD-WAN Controller devices for Cisco Cloud Hosted overlays are determined by the Cisco Cloud Ops and provisioned accordingly.

• The number of Cisco Catalyst SD-WAN Controller and Cisco Catalyst SD-WAN Validator instances recommended in the table above assumes a deployment with Cisco Catalyst SD-WAN controllers in two locations (i.e. data centers) designed for redundancy – with half the controllers in one data center and half the controllers in another data center. In other words, the table above already considers the 1:1 redundancy in the number of Cisco Catalyst SD-WAN Controller and Cisco Catalyst SD-WAN Validator instances recommended to be deployed across the two data centers – without considering any Cisco Catalyst SD-WAN Controller group/affinity configuration.

  If you are deploying Cisco Catalyst SD-WAN Controller and Cisco Catalyst SD-WAN Validator instances with a different set of assumptions, for example, across three data centers, or if you are using Cisco Catalyst SD-WAN Controller controller groups/affinity within your deployment, refer to the Points to Consider chapter for additional guidance.

• Any UCS Platform (Fifth and sixth generation above) with the same or higher hardware specifications mentioned in the above table supports Cisco Catalyst SD-WAN Controllers with similar scale numbers mentioned in this document.

• The CPU specifications are not tied to any brand, both AMD and Intel brands with specifications above are supported.

• The tested replication factor is three.

• The default compression on the HX system is applicable to all cases. This compression is automatically determined by the system and cannot be configured.

* indicates that a pair of Cisco SD-WAN Controllers supports 24 tenants and 1000 devices across all the tenants.

• A pair of Cisco Catalyst SD-WAN Controller supports 24 tenants and 1000 devices across all the tenants. For example, 24 tenants require 2 Cisco Catalyst SD-WAN Controllers, 50 tenants require 6 Cisco Catalyst SD-WAN Controllers, and 150 tenants require 14 Cisco Catalyst SD-WAN Controllers.

• The SAIE numbers are for the entire multi-tenant (cluster) deployment and there is no per tenant SAIE limitation.

• If SAIE is enabled, we recommend that the aggregated SAIE data (across all Cisco Catalyst SD-WAN Manager nodes and all tenants in the multitenant system) does not exceed 350 GB per day. If the SAIE data exceeds 350 GB per day, increase the Hard Disk capacity of each Cisco Catalyst SD-WAN Manager node up to 10 TB.

• A pair of Cisco Catalyst SD-WAN Controllers supports 24 tenants and 1000 devices across all tenants.

• A tenant can add a maximum of 1000 devices.

• The tested and recommended limit of supported Cisco Catalyst SD-WAN Validator instances in a single Cisco Catalyst SD-WAN Manager overlay is eight.