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Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

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One iSCSI Network with Dual 1 GbE 4-Port Storage Controllers

Use one iSCSI network to prevent an unavailable port or storage controller from causing a loss of connectivity between the host servers and a storage system with dual 1 GbE 4-port storage controllers .

About this task

This configuration includes two fault domains, one iSCSI network, and one Ethernet switch. Each storage controller connects to the Ethernet switch using four iSCSI connections.
  • If a physical port becomes unavailable, the virtual port moves to another physical port in the same fault domain on the same storage controller .
  • 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: This configuration is vulnerable to switch unavailability, which results in a loss of connectivity between the host servers and the storage system.

Steps

  1. Connect each server to the iSCSI network.
  2. Connect fault domain 1 (shown in orange) to the iSCSI network.
    • Storage controller 1: port 1 to the Ethernet switch
    • Storage controller 1: port 3 to the Ethernet switch
    • Storage controller 2: port 1 to the Ethernet switch
    • Storage controller 2: port 3 to the Ethernet switch
  3. Connect fault domain 2 (shown in blue) to the iSCSI network.
    • Storage controller 1: port 2 to the Ethernet switch
    • Storage controller 1: port 4 to the Ethernet switch
    • Storage controller 2: port 2 to the Ethernet switch
    • Storage controller 2: port 4 to the Ethernet switch

Example

Figure 1. Storage System with Dual 1 GbE Storage Controllers and One Ethernet Switch Storage system with dual four-port storage controllers connected to host servers through a single switch.
  1. Server 1
  2. Server 2
  3. Ethernet switch (fault domain 1 and fault domain 2)
  4. Storage system
  5. Storage controller 1
  6. Storage controller 2

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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