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Storage Configuration Best Practices for SAP HANA TDI with Dell Unity Storage
Executive summary Introduction Technology overview and considerations Storage design recommendations for Dell EMC Unity arrays for SAP HANA Configuring Unity storage for HANA using Dell EMC Unisphere for Unity Accessing Unity storage from the SAP HANA nodes
Overview
Enabling native Linux multipathing (DM-MPIO)
XFS file system
SAP HANA storage connector
SAP HANA global.ini file
Optimizing file I/Os after SAP HANA installation
Conclusion References

SAP HANA storage connector

Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Storage Configuration Best Practices for SAP HANA TDI with Dell Unity Storage > SAP HANA storage connector

SAP HANA storage connector

  • In an SAP HANA scale-out environment with worker and standby nodes, the SAP HANA storage connector for FC (fcClient) mounts and unmounts the devices to the SAP HANA nodes.

    In addition to mounting the devices, the storage connector also writes SCSI-3 persistent reservations (PRs) to the devices using the Linux sg_persist command. This operation, which is called I/O fencing, ensures that only one SAP HANA worker host has access to a set of data and log devices at a given time.