This document describes the verified scale limits for Cisco DCNM 11.3(1) for managing LAN Classic, LAN Fabric, SAN Management, and Media Controller fabrics. The values are validated on testbeds that are enabled with a reasonable number of features, and are not theoretical system limits for Cisco DCNM software or Cisco Nexus switch hardware and software. The values can increase over time with more testing and validation. When you try to achieve maximum scalability by scaling multiple features at the same time, results might differ from the values that are listed here.

Cisco DCNM Classic LAN Management

This fabric is primarily used for traditional LAN topologies including but not limited to virtual port channels (vPCs), Access-Aggregation-Core, and FabricPath.

Cisco DCNM LAN Fabric Management

This fabric is primarily used for Cisco Nexus 9000 and Cisco Nexus 3000 Series switches based VXLAN BGP EVPN deployments. (Easy Fabric installation mode).

Note	We recommend that you deploy Cisco DCNM server in Native HA mode in a production setup. NIR scale with DCNM is 250 switches, independent of Managed/Monitored mode. Refer to Cisco Network Insights for Resources Application for Cisco DCNM User Guide.

Refer the following table if you are provisioning new VXLAN EVPN fabrics.

Note	There is no limit on the number of Multi-Site Domains (MSDs) that can be created.

Refer the following table if you are transitioning a Cisco Nexus 9000 Series switches based VXLAN EVPN fabric management to DCNM. Before the migration, your fabric was an NFM managed or CLI configured fabric.

Cisco DCNM SAN Management

This fabric is used for SAN topologies.

SAN Insights

A maximum of 20K Initiator-Target-LUNs (ITLs) and Initiator-Target-N (ITNs) combined are supported .The 'N' in ITN represents a namespace ID.