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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE topic
PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
<topic xml:lang="en-us" id="storage">
<title>Virtual Storage</title>
<body>
<p>As the virtual machine will most probably expect to see a hard disk built into its virtual computer, <ph
conkeyref="vbox-conkeyref-phrases/product-name"/> must be able to present real storage to the guest as a virtual
hard disk. There are presently three methods by which to achieve this: </p>
<ul>
<li>
<p><ph conkeyref="vbox-conkeyref-phrases/product-name"/> can use large image files on a real hard disk
and present them to a guest as a virtual hard disk. This is the most common method, described in <xref
href="vdidetails.dita#vdidetails"/>. </p>
</li>
<li>
<p>
iSCSI storage servers can be attached to <ph conkeyref="vbox-conkeyref-phrases/product-name"/>. This is
described in <xref href="storage-iscsi.dita#storage-iscsi"/>.
</p>
</li>
<li>
<p>
You can allow a virtual machine to access one of your host disks
directly. This is an advanced feature, described in
<xref href="rawdisk.dita">Using a Raw Host Hard Disk From a Guest</xref>.
</p>
</li>
</ul>
<p>
Each such virtual storage device, such as an image file, iSCSI
target, or physical hard disk, needs to be connected to the virtual
hard disk controller that <ph conkeyref="vbox-conkeyref-phrases/product-name"/> presents to a virtual
machine. This is explained in the next section.
</p>
</body>
</topic>
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