Routed networking: Dom0 becomes the central point that routes all of the
traffic for the guest domains.
VLAN with Network Address Translation: Dom0 uses NAT to send
requests to a Virtual Local Network.
In the next chapter, we are going to examine the various storage options that are
available when creating guest domains with Xen.
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Storage
We need some kind of storage for saving the new virtual machines that we create.
With Xen, there is an option to use a wide variety of storage solutions for the guest
domains??”from normal disk storage to logical volume managed storage and network
storage. This chapter will show you how to use each of these storage technologies
while creating new virtual machines. We will also discuss a few of the advanced
storage options available for use with Xen.
File storage
Network File System (NFS) storage
Logical Volume Managed (LVM) storage
Files
Simple files can be used as virtual block devices containing Xen domains. This is the
quickest way to get started using Xen. We used them in Chapter 3 when we were
setting up various operating systems to run as Xen guest domains. In Chapter 3 in
the Time for Action??”Bootstrapping an Ubuntu system we created the files that hold are
guest domain and then installed Ubuntu on them.
We created the files for holding the guest domain and then installed Ubuntu to them
in Chapter 3.
File-backed virtual block devices are a convenient way to get started with Xen.
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