The internal architecture of the Unity system eliminates complex configuration and tuning steps. In our laboratory, we used the Dell EMC UnisphereTM for Unity OE 4.2.1 to:
- Create the SAP hosts
- Create a dynamic storage pool
- Create SAP volumes and map the volumes to the SAP hosts
Figure 13 shows the interface in which you can perform these tasks.
Figure 13. Dell EMC Unisphere for Unity interface
Each physical host must have two host bus adapter (HBA) ports that are zoned to the FC ports of the Unity I/O modules. If the zoning is correct, the host initiators are visible to the Unity module after the hosts are started. Because we are using a virtual environment, we added the ESXi hosts used for SAP landscapes.
To create an SAP host:
- In the Unisphere interface, select Access > Hosts in the left panel.
The Hosts page appears.
- Click the plus sign in the upper left corner and select Host.
The Add a Host screen appears.
- Enter a name for the new host, create an optional description of the host, and then click Next.
- On the OS and Network Address page, specify a host operating system (such as VMware ESXi) and the network address. Click Next.
Note: The operating system information is not required, but it allows for more specific configuration and troubleshooting instructions. The network address (name or IP address) is required to customize access to the NFS share.
- On the Select iSCSI Initiators page:
- If you are using iSCSI initiators, from the list of auto-discovered initiators, select the iSCSI initiators for the host to use to access storage resources. If the initiator you want is not in the list, click Create Initiator to add it manually and then select it from the list of manually added initiators. Click Next.
- If you are not using iSCSI initiators, click Next.
- On the Select Fibre Channel Initiators page, from the list of auto-discovered initiators, select the FC initiators for the host to use to access storage resources, as shown in Figure 14.
Figure 14. Select Fibre Channel initiators screen: Adding a Host
If the initiator that you want is not in the list, click Create Initiator to add an initiator manually, and then select it from the list of manually added initiators. Click Next.
- On the Review Host Configuration page, review all the information you entered for the SAP host. Click Finish to create the host.
Creating a dynamic storage pool
In Unity All Flash models running OE version 4.2.x or later, all new pools created in the Unisphere GUI are dynamic pools. New pools created in the Unisphere command line interface (CLI) and REST API are dynamic pools by default.
Note: You cannot change the RAID type of a dynamic pool. Also, you cannot shrink a dynamic pool or change its storage characteristics without deleting the storage resources configured in the pool and the pool itself. However, you can add drives to expand the pool.
To create a dynamic pool on All Flash models with Unity OE version 4.2 or later:
- In the left navigation bar of the GUI, select Storage > Pools.
The Pools page appears.
- Click the plus sign in the upper left corner.
The Create Pool screen appears, as shown in Figure 15.
Figure 15. Create Pool screen
- Enter a name for the new storage pool. Optionally, create a description for the storage pool. Click Next.
The Tiers page shown in Figure 16 appears.
Figure 16. Selecting the storage tier
- Select Extreme Performance Tier and RAID 5 (the default) for the dynamic pool. Click Next.
The Drives page shown in Figure 17 appears, showing the number of flash drives that are needed to support the required amount of storage.
Figure 17. Selecting the number of drives
- Click Next.
The Review Your Selections summary page appears, as shown in Figure 18.
Figure 18. Reviewing your selections
- Review all the information you entered for the dynamic pool. If you are satisfied with the information, click Finish.
To create and map the volumes:
- In the left panel of the Unisphere interface, select Storage > Block.
The LUNs page appears.
- Click the plus sign in the upper left corner.
The Create a LUN screen appears.
- Enter a name and (optionally) a description of the new LUN. Click Next.
The Configure Storage Characteristics page appears, as shown in Figure 19.
Figure 19. Configure Storage Characteristics screen: Creating a LUN
- Select the following options and click Next:
- The pool in which to create the LUN. If the storage pool contains multiple tiers, select a tiering policy and enter the required size of the LUN. The default LUN selection is Thin.
- Select Compression if desired
The Select Host Access page appears, as shown in Figure 20.
Figure 20. Select Host Access page: Creating a LUN
- Select the host that will have access to the newly created LUN. Click OK.
The Summary page appears, as shown in Figure 21.
Figure 21. Creating a LUN Summary screen
- Review all the information you entered for the new LUN. Click Finish.
A LUN is created that is visible to the select hosts.