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Dell PowerVault ME4 Series Storage System Deployment Guide

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Single-controller module configurations

A single controller module configuration does not provide redundancy if a controller module fails.

This configuration is intended only for environments where high availability is not required. If the controller module fails, the host loses access to the storage data until failure recovery actions are completed.

NOTE:Expansion enclosures are not supported in a single controller module configuration.
Figure 1. Connecting hosts: ME4 Series 2U direct attach – one server, one HBA, single path
2U direct attach – one server, one HBA, single path
  1. Server
  2. Controller module in slot A
  3. Controller module blank in slot B
NOTE:If the ME4 Series 2U controller enclosure is configured with a single controller module, the controller module must be installed in the upper slot. A controller module blank must be installed in the lower slot. This configuration is required to enable sufficient air flow through the enclosure during operation.

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