Users Guide

If the host is running ESXi 5.5, the following options are available.
VMFS-5—Select this option to enable additional capabilities, such as support for a datastore that is larger than 2 TB.
VMFS-3—Select this option if the datastore is accessed by legacy (pre-5.0) ESX hosts.
Host Selection
Use the Host Selection page to select one or more hosts to which to map the raw storage.
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Wizard Page Reference