The Bottom Line
Articulate the key value propositions of virtualization. Virtualization solves
the numerous pain points and limitations of physical server deployments today.
Primary benefits of virtualization include consolidation of resources, which increases
resource utilization and provides OS abstraction from hardware, allowing OS mobility;
financial savings through less server hardware, less datacenter space, and simpler
licensing; faster provisioning of environments; and additional backup and recovery
options.
Master It How does virtualization help in service isolation in branch office
situations?Understand the differences in functionality between the different versions
of Hyper-V. Windows Server 2008 introduced the foundational Hyper-V capabilities,
and the major new features in 2008 R2 were Live Migration and Cluster Shared
Volumes (CSV). Windows 2008 R2 SP1 introduced Dynamic Memory and RemoteFX.
Windows Server 2012 introduced new levels of scalability and mobility with features
such as Shared Nothing Live Migration, Storage Live Migration, and Hyper-V Replica
in addition to new networking and storage capabilities. Windows 2012 R2 Hyper-V
enhances many of the 2012 features with generation 2 virtual machines, Live
Migration compression and SMB support, new Hyper-V Replica replication
granularity, and Hyper-V Replica Extended replication. Windows Server 2016 builds
on this with shielded VMs providing new levels of security for virtual environments,
containers for new ways to deploy and manage applications, and other features and
management enhancements.
Master It What is the largest virtual machine that can be created on Windows
Server 2012 Hyper-V, and does this change for Windows Server 2016 Hyper-V?
Master It What features were enabled for Linux virtual machines in Windows
Server 2016 Hyper-V?Differentiate between the types of cloud service and when each type is best
utilized. There are three primary types of cloud services: software as a Service (SaaS),
platform as a service (PaaS), and infrastructure as a service (IaaS). SaaS provides a
complete software solution that is entirely managed by the providing vendor, such as a
hosted mail solution. PaaS provides a platform on which custom-written applications
can run, and it should be used for new custom applications when possible because it
minimizes maintenance by the client. IaaS allows virtual machines to be run on a
provided service, but the entire OS and application must be managed by the client.
IaaS is suitable where PaaS or SaaS cannot be used and in development/test
environments.