User Manual

Command View EVA
62 Enterprise Virtual Array 3000 User Guide
Figure 19: Virtual Disk folder
Presenting a Host
A host can be selected for presentation (that is, a virtual disk made available to a
host). Two choices exist:
■ Select a host for presentation—indicates that the host can use the virtual disk
for data storage. The host will see the virtual disk at the next available LUN.
■ Select a host and LUN for presentation—indicates that the host can use this
virtual disk for data storage. The host will see the virtual disk at the specified
LUN.
Hosts
A host is a computer that operates applications relative to a storage system. A host
uses one or more virtual disks created and presented by the controller pair. Each
host connects to the fabric through one or more Fibre Channel adapters (FCAs).
An FCA is a hardware and firmware device that enables a host computer to use the
Fibre Channel transmission protocol. Each Fibre Channel port on a host adapter
has a World Wide Name (WWN). Typically, the host operating system reports the
WWNs of all FCA ports in the host. The WWN also appears on a sticker on the
FCA board.
The Host folder is accessible using the folder structure in the Navigation pane, as
shown in Figure 20.