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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
Overview
Creating a host
Creating a traditional pool
Creating a dynamic pool
Creating a volume and mapping to the SAP HANA node
Enabling FAST VP
Creating a NAS server
Creating a file system and NFS share
Accessing Unity storage from the SAP HANA nodes Conclusion References

Creating a traditional pool

Home > Workload Solutions > SAP > Guides > SAP HANA TDI Guides > Storage Configuration Best Practices for SAP HANA TDI with Dell Unity Storage > Creating a traditional pool

Creating a traditional pool

  • A pool is a set of disks that provide specific storage characteristics for the resources that use them. For example, the pool configuration defines the types and capacities of the disks in the pool. For physical deployments, the pool configuration also defines the RAID configurations.

    Dell EMC recommends creating one storage pool for all SAP HANA data volumes and log volumes in a Unity array when you are using either an all-flash model or a hybrid model. When using the all-flash model, create one storage pool on the extreme performance tier. When you use the hybrid model, create one traditional all-flash pool or (optionally) a FAST VP-enabled traditional storage pool across the performance tier (SAS) and the extreme performance tier (flash).

    Note: Traditional pools are supported on all Unity models. For Unity All Flash models running OE version 4.2.x or later, you can only create traditional pools using the Unisphere CLI or REST API.

    With Unity hybrid models, traditional pools are created in the Unisphere GUI. To create an all-flash storage pool for provisioning the HANA persistence on the Unity hybrid model:

    1. Select Storage > Pools in the left panel. The Pools page appears.
    1. To add a storage pool, click the plus sign in the upper left corner. The
      Create Pool screen appears.
    2. Enter a name and (optionally) a description of the storage pool. Click Next.
    3. On the Select Storage Tiers page (shown in Figure 8), select the required tier or tiers for the storage pool:

    Extreme performance tier Provides fast access times for resources demanding the quickest response time. Databases can achieve their best performance when using this tier.

    Performance tierProvides high, all-round performance with consistent response times, high throughput, and good bandwidth. This tier is appropriate for database resources accessed centrally through a network.

    Capacity tier Provides high storage capacity with generally lower performance. This tier is appropriate for storing large amounts of primarily static data (such as video, audio, and image files) for users and applications without strict performance requirements.

    Figure 8.        Creating a pool – Select Storage Tiers page

    1. Under Selected Tiers, change the RAID configuration, if required.
    2. Click Next. The Select Amount of Storage page appears, as shown in Figure 9.

    Note: Flash drives are required to successfully meet the SAP HANA performance KPIs for the SAP HANA persistence. With a FAST VP-enabled traditional storage pool on the Unity hybrid model, Dell EMC recommends using RAID 5 8+1 (flash) on the extreme performance tier for data devices and RAID 5 4+1 (SAS) on the performance tier for log devices.

    Figure 9.        Creating a pool – Select Amount of Storage page

    1. From the drop-down list, select the usable capacity required for the
      storage pool. Click Next.
    2. Review all the information you entered for the storage pool, as shown
      in Figure 10, and then click Finish to create the storage pool.

    Figure 10.     Creating a pool – Review Selection page