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Design Guide—Dell Validated Design for SAP HANA Deployments with Dell VxRail Infrastructure
Executive summary VxRail requirements
SAP-certified VxRail models
Sizing
CPU and memory considerations
Sizing a VxRail cluster
SAP HANA VMs per node and per total
Disks
Networks
vSphere Clustering Service and SAP HANA
Configuration recommendations for SAP HANA virtual machines Network considerations Support requirements and considerations References Appendix A: Deploying Dell Networking SmartFabric Services with VxRail HCI Appendix B: VxRail stretched cluster validation environment Appendix C: VxRail dynamic nodes

Sizing a VxRail cluster

Sizing a VxRail cluster

  • A VxRail cluster can have a minimum of three nodes and as many as 64 nodes. If you are running SAP HANA in production on a VxRail cluster, a minimum of four nodes is strongly recommended to avoid an availability and performance impact when nodes become unavailable, for example, during software upgrades.

    When sizing a VxRail cluster for SAP HANA, consider having enough free resources (standby nodes) available for smooth upgrades or for situations where VMware HA must migrate VMs to available nodes if a VxRail node fails.

    The following table shows Dell Technologies’ sizing recommendations for a VxRail cluster for SAP HANA:

    Table 6.      Recommended VxRail standby nodes

    Number of VxRail nodes required for SAP HANA

    Recommended nnumber of additional standby nodes

    3–7

    1

    8–14

    2

    15–21

    3

    22–28

    4

    29–35

    5

    36–42

    6

    43–49

    7

    50–56

    8