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Dell PowerVault ME4 Series Storage System Deployment Guide

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Single-controller module configuration for replication

Cabling two ME4 Series controller enclosures that are equipped with a single controller module for replication.

Multiple servers, multiple switches, one network

The following diagram shows the rear panel of two controller enclosures with I/O and replication occurring on the same network:

Figure 1. Connecting two storage systems for replication – multiple servers, multiple switches, one network
Mutliple servers, multiple switches, one network
  1. 2U controller enclosures
  2. Two switches (I/O)
  3. Connection to host servers
  4. Switch (Replication)

For optimal protection, use multiple switches for host I/O and replication.

  • Connect two ports from the controller module in the left storage enclosure to the left switch.
  • Connect two ports from the controller module in the right storage enclosure to the right switch.
  • Connect two ports from the controller modules in each enclosure to the middle switch.

Use multiple switches to avoid a single point of failure inherent to using a single switch, and to physically isolate replication traffic from I/O traffic.

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