From the Domain Function / Storage Type drop-down menu, select the appropriate storage type for the storage domain. All communication to the storage domain is via the active host and not from the Red Hat Enterprise Virtualization Manager. At least one host must exist in the system before the storage can be configured. Thanks — Preceding unsigned comment added by 22.214.171.124 (talk) 16:20, 25 April 2017 (UTC) Hello there. Red Hat Enterprise Virtualization system administrators need a working knowledge of Storage Area Networks (SAN) concepts. SAN usually uses Fibre Channel Protocol (FCP) for traffic between hosts and shared external storage.