Reference Guide

Technical support and resources
6 Dell EMC XC Series Appliance and XC Core System Remote Direct Memory Access Deployment Guide
1.1.3 Supported Nutanix packages
The following are supported Nutanix packages:
• AOS 5.9.2 and later
• Foundation 4.4.1 and later (supports rNDC and PCI) Absolutely minimum version of 4.3.2.
NOTE: Prior to Foundation 4.4.1, see section Troubleshooting 1.1.8
, which requires no rNDC.
1.1.4 RDMA validate switches
The following switches are used to validate the RDMA Solution.
• Dell EMC S4048-ON
• Arista 7050QX, Arista 7050qx-32
• Mellanox SN2100
Contact the switch vendor to ensure compatibility with RDMA.
1.1.5 Minimum switch requirements
This section describes RDMA switch configuration.
To configure the switch:
1. Connect the RDMA supported NIC port to switch and configure as per RDMA pre-request.
2. Configure VLAN for corresponding trunk-based switch port.
3. Ensure that the General Flow control is off for send/receive mechanism config.
4. Enable priority flow control mode (PFC) with priority 3 or priority 4.
5. Switches are DCBX capable and enabled.
6. Ports mapped are configured with DCBX.
Refer to the Switch User Guide to enable these settings or contact the switch vendor for support.
1.1.6 Limitations
1.1.6.1 Update path
The cluster must have been created with Foundation 4.3.2 or later and AOS 5.9.2 or later. Otherwise, the
interfaces are not created. Dell EMC recommends that you deploy with Foundation 4.4.1 or later.
1.1.6.2 Enabling RDMA using Prism
This section describes how to enable RDMA using Prism.
After the cluster is created with the supported hardware and software, use the follow these steps to enable
RDMA.
1. Make sure to image the nodes with CX4 adapter interface connected to Mellanox switch – RDMA traffic.
2. Make sure to have one adapter port connected to management switch – Node imaging.
3. Make sure foundation version is 4.3.x and above.