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XC Family HCI systems support both 10 GbE and 25 GbE networks for communication between the nodes. The minimum recommended network configuration is 10 GbE. For the best performance of SAP HANA systems, consider a 25 GbE network with NVMe drives.
Set an MTU size of 9,000 on the distributed switch and in the operating system network settings of the SAP HANA VM for the internode network. This setting meets the SAP performance requirements for internode network communication. A mismatch in MTU size between hosts and VM leads to network instability and communication issues.
To ensure the availability of enough physical and virtual network interfaces, follow the recommendations that are described in SAP HANA Network Requirements.
Note: It is a requirement to separate SAP HANA network traffic such as database access and SAP HANA replication from all other types of traffic.