Using Shared Storage

Slides 223-232, 235-237, 240-241

File Transfer Protocol

The FTP (File Transfer Protocol) is used to upload and download files between clients and servers.​

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Like plain HTTP, FTP has no security mechanisms.

An FTP session can be protected using encryption protocols.​

Benefits of the Cloud

• the cloud provides rapid elasticity

  • scale quickly to meet peak demand

• on-demand

  • customer can initiate service requests and that the cloud provider can respond to them immediately​

  • useful for project-based needs

• pay-per-use

  • The provider's ability to control a customer's use of resources through metering is referred to as measured service.​

examples of virtualization

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• Test new OS or software application.

• Run software not supported by the OS.

• Create test labs.

• Configure and deploy multiple computing environments.

• Set up and deploy systems for training classrooms

Virtual Machine Manager= Hypervisor, enables virtualization within the systemn

Hypervisor

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A bare metal hypervisor is installed directly on a system or server and does not require an operating system to function. This tends to be more stable, but has limited hardware capabilities. Use in enterprise organizations

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A host-based hypervisor runs within an existing operating system, therefore the operating system is installed first. This provides better hardware compatibility because host operating system is able to share its database of drivers with virtual machines. Host-based hypervisors are typically better for use on individual machines​

• Subscription

• On Demand software

• Usage: Software applications

• office and productivity software​

• accounting

• web-conferencing

• apps are ready to use, with little to no set up​

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Software as a Service

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• Access to a computing platform or software environment that the user can use to develop or host web-based applications

• Provider manages the underlying hardware

• Customer performs software development ​

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Platform as a Service

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• ​access to computing and network resources : storage devices, processing, entire computers, and even whole networks

• The user can install and manage operating systems, file systems

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Infrastructure as a Service

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