This section describes how to set up a host (Microsoft Windows server) to access PowerMax storage over iSCSI. The steps are also marked with sequence numbers for ease of navigation.
Make sure that Windows Server has the iSCSI initiator feature installed and that the iSCSI initiator service is running. If it is not running, set it up to start automatically and start the service.
Figure 10. Checking for iSCSI initiator service on Windows host
Get the iSCSI initiator name (IQN) published by the service. Use this IQN to configure the host using Unisphere for PowerMax as described in the . Most of the host-specific iSCSI configuration parameters described in this section can be defined using this iSCSI initiator properties screen.
Figure 11. Checking iSCSI initiator IQN on Windows server
Change the firewall settings on the host to allow communication with the iSCSI target. The default port for iSCSI communication is 3260. Enable traffic through that port using Windows firewall advanced settings.
Configure the IP interfaces on the Windows server NICs prior to iSCSI configuration from Unisphere for PowerMax. as described in earlier section. Then continue with the target discovery and other set up steps required on Windows server to start using PowerMax devices.
Figure 12. Setup IP interfaces on Windows server
Use Windows NIC properties screen and setup Jumbo packets with value 9600 and higher.
Figure 13. Setup Jumbo Frame for MTU 9000
To ensure that Windows server interfaces can connect to PowerMax iSCSI ports, run a ping test on the Windows server, specifying the PowerMax iSCSI port IP interface addresses chosen previously.
Figure 14. Ping test from Windows server to PowerMax iSCSI port
Multipathing software is critical for any database deployment for fault tolerance and load balancing through available I/O paths. If using Windows MPIO, verify that it is properly installed and configured to discovered iSCSI targets. If Dell EMC PowerPath is used, ensure that MPIO is properly uninstalled to avoid any conflicts.
Figure 15. Windows MPIO discovery for iSCSI devices
If CHAP authentication has been configured on PowerMax for security (which can only be done using Solutions Enabler CLI for PowerMax) you must also configure CHAP authentication on the hosts. Otherwise the hosts will not be able to login to PowerMax iSCSI targets. See the Appendix for more details on how to set that up.
Figure 16. CHAP authentication on Windows iSCSI initiator
Note: CHAP authentication on PowerMax can be configured only through the Solutions Enabler CLI (SYMCLI) command line interface. It can not be done using Unisphere for PowerMax. Refer to the Appendix for SYMCLI examples for CHAP and other iSCSI-related commands.
At this point Windows iSCSI initiator should be able to discover the targets. Follow the numbered steps in the figure below to complete the discovery.
Figure 17. Windows server IQN connected to PowerMax target
Now that target is configured, storage devices provisioned through iSCSI should be discoverable on Windows server. Use the iSCSI initiator to auto-configure these devices as shown in the figure below.
Figure 18. Auto-configuration of PowerMax devices
Configure the remaining target nodes in the same way so that the Windows server will be able to access those devices. Configure the nodes as shown in the numbered steps in the figure below.
Figure 19. iSCSI device discovery on Windows server