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that the storage is treated similarly to a storage area network (SAN), where
the storage is not owned by a specific single server.
Virtual Appliances A virtual appliance is a virtual server packaged with
specific software for a specific use. For example, a cloud provider might
provide a deployable web server appliance as well as a database server
appliance. They can be used in either a public or private cloud environment
and facilitate deployment for nontechnical users.
Cloud Management and Auditing Services A cloud consumer is likely to
have a relationship with multiple cloud providers, which provide a complex
and rapidly changing set of services. Independent services exist that audit
and manage this. Examples include monitoring performance and uptime of
cloud services, tracking cloud spending, tracking configuration changes,
validating security and compliance objectives, and orchestrating the
deployment of cloud components.
CERTIFICATION OBJECTIVE 3.02
Techniques and Methods for Cloud Computing Deployment
Cloud deployments have many technical similarities to other IT-system
deployments, but they differ in how resources are provisioned (see “Cloud
Computing Characteristics” in Chapter 1). Networking, automation, self-
service, federation, and the increased importance of standards are
paramount to a successful cloud deployment.
Networking
All forms of cloud computing depend on networking. The following are the
key considerations of network design as they relate to cloud computing:
Locations An organization’s private network consists of switches and
routers interconnecting network devices behind corporate firewalls.
With cloud computing, IT services are delivered to clients anywhere
using any type of device.
Bandwidth This defines how quickly data can be moved over a wired
or wireless connection. Local area networks (LANs) are contained in a
single location, such as an office building or university campus and
therefore enjoy high bandwidth. Because cloud computing clients can
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