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Dell Storage Center SCv2000 and SCv2020 Storage System Deployment Guide

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Two Servers Connected to a Single 12 Gb 4-Port SAS Storage Controller

A storage system with four 12 Gb front-end SAS ports on a single storage controller can connect up to two host servers, if each host server has two SAS HBAs.

About this task

This configuration includes four fault domains and the storage controller is connected to each host server using two SAS connections.

  • NOTE: This configuration is vulnerable to storage controller unavailability, which results in a loss of connectivity between the host servers and the storage system.

Steps

  1. Connect fault domain 1 to host server 1 by connecting a SAS cable from storage controller 1: port 1 to host server 1.
  2. Connect fault domain 2 to host server 1 by connecting a SAS cable from storage controller 1: port 2 to host server 1.
  3. Connect fault domain 3 to host server 2 by connecting a SAS cable from storage controller 1: port 3 to host server 2.
  4. Connect fault domain 4 to host server 2 by connecting a SAS cable from storage controller 1: port 4 to host server 2.

Example

Figure 1. Storage System with One 12 Gb SAS Storage Controller Connected to Two Host Servers Storage system with a single four-port storage controller directly connected to two host servers.
  1. Server 1
  2. Server 2
  3. Storage system
  4. Storage controller

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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