Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Dell Validated Design for SAP HANA TDI with Dell PowerMax 2500 and 8500 Storage Arrays > Preparing the SAP HANA nodes
The configuration example in this guide assumes that the following basic installation and configuration operations are complete on the SAP HANA nodes:
Note: SAP HANA can only be installed on certified server hardware. A certified SAP HANA expert must perform the installation.
Linux native multipathing (DM-MPIO)
The SLES and Red Hat Enterprise Linux native MPIO contains default configuration parameters for PowerMax storage to provide optimal performance in most environments. It is not necessary to create a device stanza for these arrays unless you want to modify the default behavior. When multipathing is enabled, the host accesses the block LUNs over multiple paths, providing redundancy if there is a component failure.
The /etc/multipath.conf file controls multipathing. This file does not exist by default. If you want to view or edit the multipath.conf settings, create the file by running the following command:
multipath -t > /etc/multipath.conf
Note: For the latest information about the operating system version and storage array MPIO settings for native multipathing, see the Dell EMC Host Connectivity Guide for Linux.
The SAP HANA persistence must be visible to every node in the SAP HANA cluster. Run the rescan-scsi-bus.sh command or reboot each node, as described in this section.
To verify that the volumes are visible:
multipath -ll | grep -B1 -A5 512G
multipath -ll | grep -B1 -A5 256G
The unique device identifier of the multipath device must match the WWN of the volumes that you created in the Unisphere UI. (When viewed on a Linux host, the WWN of the volume from the PowerMax array is now preceded by a 3.)
mkfs.xfs /dev/mapper/360000970000197900137533030303234
After all the file systems are created, you are ready to install the SAP HANA scale-out cluster.