Dell PowerVault MD3260i Troubleshooting Manual
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Dell PowerVault MD3260i Troubleshooting Manual

Dell PowerVault MD3260i Troubleshooting Manual

Powervault md-series iscsi storage array
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Download this manual See also: Administrator's Manual, Owner's Manual
Troubleshooting the
Dell PowerVault MD-Series iSCSI
Storage Array
Configuring the iSCSI Host Ports

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Summary of Contents for Dell PowerVault MD3260i

  • Page 1 Troubleshooting the Dell PowerVault MD-Series iSCSI Storage Array Configuring the iSCSI Host Ports...
  • Page 2 Dell Inc. is strictly forbidden. For more information, contact Dell. Dell, the DELL logo, and the DELL badge, PowerVault are trademarks of Dell Inc. Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

  • Page 3: Table Of Contents

    Enabling IPv4 or IPv6 ....................5 Should I Set Up iSCSI Sessions Automatically or Manually? ............5 Setting Up iSCSI Automatically: Using the Dell MD Configuration Utility ........5 Setting Up iSCSI Manually: Using the MD Storage Manager ............6 Troubleshooting the iSCSI Host Ports ................

  • Page 4: About This Document

    To understand the scope and organization of this document, refer to the following table. Topic Description What does this document  An overview of the iSCSI data protocol between Dell contain? PowerVault MD3200i-series and MD3600i-series storage arrays and host servers Recommended iSCSI host port setup guidelines ...

  • Page 5: Iscsi Communication Between The Storage Array And Host Server

    IPv4 and IPv6 are both supported protocols on the MD-series iSCSI storage arrays. Whichever one you use, be aware of the following with either protocol: It is possible to enable both IPv6 and IPv4 on your host server. However, Dell recommends that ...

  • Page 6: Setting Up Iscsi Manually: Using The Md Storage Manager

    Go to /opt/dell/mdstoragesoftware/mdconfigurationutility and run the executable Whichever way you launch MDCU, the window shown in Figure 1 is displayed. Figure 1. Dell MD Configuration Utility for iSCSI Setting Up iSCSI Manually: Using the MD Storage Manager To manually set up iSCSI communication between your host server and storage array, perform the following steps: ...
  • Page 7 Figure 2. MD Storage Manager Summary View...
  • Page 8 Figure 3. MD Storage Manager Physical View Once the storage array is successfully added to MD Storage Manager, all physical and logical components of your storage array are manageable using the menu-based interface. For more information on installing and using MD Storage Manager, see the Getting Started Guide that shipped with your storage array and the Help option from the main window.

  • Page 9: Troubleshooting The Iscsi Host Ports

    Troubleshooting the iSCSI Host Ports There are two different RAID controller module host port layouts on the MD-series iSCSI storage arrays, depending on model type: Figure 4. Four-port MD3200i-series 1GB iSCSI storage array Figure 5. Two-port MD3600i-series 10Gb iSCSI storage array Default iSCSI Host and Management Port IP Addresses Each port on the storage array is assigned a default, factory-set IP address.

  • Page 10: Recognizing Issues Involving The Iscsi Host Port

    iSCSI port 3 192.168.133.101 192.168.133.102 255.255.255.0 Ethernet 192.168.128.101 192.168.128.102 255.255.255.0 management port * Port 2 and 3 are available on 1Gb iSCSI MD3200i-series storage arrays only Recognizing iSCSI Host Port Problems Problems occurring due to misconfigured or nonfunctional iSCSI host ports on your storage array's RAID controller modules can appear in a number of different ways.
  • Page 11 Figure 6. Enclosure Status LEDs (Front) Table 2. Enclosure Status LED Values Function Enclosure status Solid blue: Normal operation Blinking blue: Host identifying Solid amber: Enclosure rebooting or being reset Blinking amber: Enclosure fault or host not using preferred path to virtual disks Enclosure power Solid green: At least one power supply active...
  • Page 12 Table 3. Enclosure/RAID Controller Status LED Values Function DC Power Solid green: DC output voltage within limit Off: DC output voltage not within limit Power supply/fan fault Solid amber: DC output voltage not within limit or fan fault detected Off: No fault condition AC power Solid green:...

  • Page 13: Troubleshooting Physical Connectivity Problems

    Troubleshooting Physical Connectivity Problems When experiencing problems with iSCSI host ports, always first check for simple connectivity issues (see Basic Cabling, Power and Switch Issues). If problems persist, refer to the following table: Table 4. Diagnosing iSCSI Host Port Connectivity Issue/Problem Recommendation Experiencing physical link errors or...
  • Page 14 Reduced throughput If you have connectivity but are experiencing reduced throughout, make sure your iSCSI port is not connecting to the host server through a slower-than- expected speed. For example, a 10Gb port can connect using a 1Gb network switch, but the slower switch will impact throughput.

  • Page 15: Troubleshooting Iscsi Host Port Ip Addressing And Configuration

    IPv6 link local address determined from the MAC address of the port (unless IPv6 is disabled). Dell recommends that you do not configure more than one NIC per host on the same subnet. Multiple NICs on the same subnet can cause IP address confusion, especially in direct-attached configurations.
  • Page 16 Using more than one NIC on the Check that you can ping all iSCSI host ports from the same subnet attached host server. Multiple NICs configured on the same subnet cannot complete a ping command because the default NIC originating the ping command may not have a path to the target IP address being pinged.
  • Page 17 packet transmission. On Windows-based hosts, send a 9000-byte packet to 192.168.130.101 using the following command: ping –l 9000 192.168.130.101 On Linux-based hosts, use this command to perform the same function: ping –s 9000 192.168.130.101 If the ping is successful, the packet transmission has completed.

  • Page 18: Other Device Discovery Or Iscsi Session Problems

    Other Device Discovery or iSCSI Session Problems Before starting the discovery process, verify that your host server can ping all iSCSI target ports. Using Mixed IPv4 and IPv6 Configurations When you initially set up your iSCSI storage array, the discovery process returns all accessible network portals on the storage array.

  • Page 19: Basic Best Practices: Iscsi Host Port Setup And Configuration

    Basic Best Practices: iSCSI Host Port Setup and Configuration Tables 3 and 4 provide high-level descriptions of basic Dell-recommended best practices for iSCSI host port configuration. For a more detailed discussion, see the Dell IP SAN Best Practices whitepaper at http://www.dell.com/us/enterprise/p/d/campaigns/powervault-resources.aspx and the iSCSI Best Practices video at http://del.ly.PowerVaultMD.
  • Page 20 switches with different subnet address, as well as physically separate network switches. Setting up management and iSCSI traffic on the same networks may result in network congestion and performance loss. ESX-based host servers will not fail back You must redistribute the virtual disks in MD Storage Manager LUNs automatically when a VNOP error is encountered...

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Powervault md3660i

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