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Dell Storage Manager 2020 R1 Administrator's Guide

Fault Domains in Legacy Mode

In Legacy Mode, each pair of primary and reserved ports are grouped into a fault domain. The fault domain determines which ports are allowed to fail over to each other.

The following requirements apply to fault domains in legacy mode on a dual-controller Storage Center:

  • A fault domain must contain one type of transport media (FC or iSCSI, but not both).
  • A fault domain must contain one primary port and one reserved port.
  • The reserved port must be located on a different controller than the primary port.
    NOTE:For a single-controller Storage Center, only one fault domain is required for each transport type (FC or iSCSI) because there are no reserved ports.

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