PS 6100 Series and ISCSI Connection to Windows

Troubleshooting

The Dell EqualLogic PS 6100 series is a reliable storage solution widely used in enterprise environments. However, issues can arise when connecting via iSCSI to Windows systems, often due to network configuration errors or authentication mismatches. This guide provides insights into troubleshooting common iSCSI connectivity problems between Windows Server 2019 and PS 6100 series devices.

Network Configuration

Ensure that the network configuration is properly set up to enable smooth communication between your Windows host and the PS 6100 series storage array. Consider the following configurations:

  • VLAN Segmentation: Segregate your iSCSI traffic from other network traffic by using separate VLANs. This setup helps in minimizing latency and potential collisions.
  • IP Addressing: Confirm that both the Windows server and the SAN interfaces are correctly assigned IP addresses within the same subnet. Use static IP addresses to avoid changes that dynamic addressing might introduce.
  • Firewall Rules: Ensure that firewall rules allow iSCSI traffic (typically TCP port 3260) on all relevant interfaces.

Authentication Settings

Incorrect CHAP (Challenge Handshake Authentication Protocol) configurations are a common cause of connectivity issues. To verify:

  • Double-check that the CHAP settings on both the Windows iSCSI initiator and the EqualLogic target match. Pay attention to case sensitivity and any special characters.
  • In the Windows iSCSI Initiator Properties, confirm that you have added the appropriate CHAP username and secret under the Discovery and Target tabs.

iSCSI Initiator Settings

The Windows iSCSI Initiator requires correct settings to connect to the SAN. Check the following configurations:

  • Discovery: Use the iSCSI Initiator to add the IP address of the EqualLogic group as a discovery target. This step allows the server to recognize available volumes.
  • Adapter Binding Order: Ensure that the network adapters are bound in the correct order with the iSCSI adapters prioritized for iSCSI traffic.

Troubleshooting Network Connectivity

When encountering issues, start by verifying basic connectivity and network services:

  • Use ping to check connectivity between the Windows host and the EqualLogic array. If pings fail, re-assess network cables, switches, and VLAN configurations.
  • Check the Ethernet switch configurations to ensure that jumbo frames are enabled, which is often recommended for iSCSI traffic.

Additional Resources

For more detailed guidance and specific configuration examples, refer to the official Dell EqualLogic resources:

Must Read