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Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

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Two iSCSI Networks Using the Embedded Ethernet Ports on a Storage System with Dual iSCSI Storage Controllers

Use two iSCSI networks to prevent an unavailable port, switch or storage controller from causing a loss of connectivity between the host servers and a storage system with dual iSCSI storage controllers .

About this task

This configuration includes two fault domains, two iSCSI networks, and two Ethernet switches.
  • If a physical port or Ethernet switch becomes unavailable, the storage system is accessed from the switch in the other fault domain.
  • If a storage controller becomes unavailable, the virtual ports on the offline storage controller move to the physical ports on the other storage controller .
  • NOTE: The Flex Port feature allows both Storage Center system management traffic and iSCSI traffic to use the same physical network ports. However, for environments where the Storage Center system management ports are mixed with network traffic from other devices (such as voice, backups, or other computing devices), separate iSCSI traffic from management traffic using VLANs.

Steps

  1. Connect each server and Ethernet switch 1 to the corporate/management network (shown in green).
  2. Connect each server to both iSCSI networks.
  3. Connect embedded fault domain 1 (shown in orange) to iSCSI network 1.
    1. Connect the management port on storage controller 1 to Ethernet switch 1.
    2. Connect the management port on storage controller 2 to Ethernet switch 1
  4. Connect embedded fault domain 2 (shown in blue) to iSCSI network 2.
    1. Connect the replication port on storage controller 1 to Ethernet switch 2.
    2. Connect the replication port on storage controller 2 to Ethernet switch 2.
    Figure 1. Two iSCSI Networks using the Embedded Ethernet Ports on Dual iSCSI Storage ControllersCabling the Ethernet management (MGMT) and replication (REPL) ports to two Ethernet switches for iSCSI front-end host connectivity.
    1. Corporate/management network
    2. Server 1
    3. Server 2
    4. Ethernet switch 1 (fault domain 1)
    5. Ethernet switch 2 (fault domain 2)
    6. Storage system
    7. Storage controller 1
    8. Storage controller 2
  5. To configure the fault domains and ports, click the Configure Embedded iSCSI Ports link on the Configuration Complete page of the Discover and Configure Uninitialized SCv2000 Series Storage Centers wizard.

Next steps

Install or enable MPIO on the host servers.
  • NOTE:After the Storage Center configuration is complete, run the host access wizard to configure host server access and apply MPIO best practices. For the latest best practices, see the Dell Storage Center Best Practices document on the Dell TechCenter site ( http://en.community.dell.com/techcenter/storage/).

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