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Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

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Two iSCSI Networks with Dual 10 GbE 2–Port 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 10 GbE 2-port storage controllers .

About this task

This configuration includes two fault domains, two iSCSI networks, and two Ethernet switches. The storage controllers connect to each Ethernet switch using one iSCSI connection.
  • 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 .

Steps

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

Example

Figure 1. Storage System with Dual 10 GbE Storage Controllers and Two Ethernet Switches with dual two-port connected to host servers through two switches.
  1. Server 1
  2. Server 2
  3. Ethernet switch 1 (fault domain 1)
  4. Ethernet switch 2 (fault domain 2)
  5. Storage system
  6. Storage controller 1
  7. Storage controller 2
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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