Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Storage Configuration Best Practices for SAP HANA TDI with Dell Unity Storage > Creating a volume and mapping to the SAP HANA node
Each SAP HANA node requires two volumes for persistence, one for data and one for log. To create the SAP HANA volumes:
If there are multiple tiers in the storage pool, select a tiering policy and enter the required size of the LUN, as shown in Figure 15. Click Next.
Note: The default LUN selection is THIN. Leave Compression unchecked for SAP HANA production installations.
Figure 15. Creating a LUN – Configure Storage Characteristics screen
Note: Use SAP HANA Storage Requirements to determine the final capacity of the data and log LUNs. In the following examples, we used 256 GB for the log LUN and 614 GB for the data LUN.
Figure 16. Creating a LUN – Select Host Access page
Figure 17. Creating a LUN - Summary