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For Ethernet connectivity, use multiple switches that are connected through Virtual Link Trunking interconnect (VLTi) and Link Aggregation Control Protocol (LACP) or equivalent technologies. User-defined link aggregations can include two to four different Ethernet ports, which must be on the same node and operate at the same speed. A mirror link aggregation is automatically created on the peer node. Note that user-defined link aggregations only support NAS server interfaces. Each PowerStore node must have connectivity to all linked switches. For optimum performance and availability from these ports, Dell Technologies also recommends configuring link aggregation across the corresponding switch ports.
To connect the SAP HANA nodes using NAS/NFS, use a dedicated storage IP network that has redundant switches with the same link speed on all components, including host network interface cards (NICs) and switch ports. A minimum speed of 25 GB/s is recommended and a maximum transition unit (MTU) of 9,000 is required for jumbo frames. When IP switches are connected using uplinks, the aggregated bandwidth of the uplinks must be able to support the aggregated total bandwidth of all the SAP HANA nodes that are using these uplinks. An SAP HANA node requires the maximum bandwidth of 400 MB/s.
Direct attachments
PowerStore systems support direct attachment of the SAP HANA hosts to the appliance through FC provided the hosts connect to both the PowerStore nodes and have the required native Linux multipathing software (DM-MPIO). Although direct-attached FC connections are supported, for production environments Dell Technologies highly recommends using redundant switch hardware between the PowerStore and external clients to provide HA and protect SAP HANA against any component failures.