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LO3 (virtualization (Cloud Storage:This is putting data on a hardware in a…
LO3
virtualization
Cloud Storage:This is putting data on a hardware in a remote physical; location which can be accessed from anywhere using the internet
-Easy to recover from disasters
+Don’t have total control
Hybrid Cloud Storage:It is an approach to manage cloud storage and local storage resources. This is a mixture of private cloud, public cloud and locally owned services.
-.It is faster than normal cloud storage
+.It takes a lot of experience to use it
Storage Virtualisation:It is a storage that has many storages and make it look like one to let the computer still run
-It creates better workflow
+Has data security risks
Client Virtualisation:It is used to separate a computer desktop environment from the physical computer
-.Access from anywhere
+.Requires network access
Server Virtualisation:This is a process that creates and abstracts multiple virtual instances on a single server allowing each to run independently
+It saves a lot of money
-The security is bad as it could be on the same server as other people
Business systems
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Helpdesk
A help desk is a resource intended to provide the customer or internal user with information and support related to a company's processes
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types of networks
Metropolitan Area Network :A network that interconnects LAN’s and is a small version of a WAN used for Towns or cities
+cheaper than wan
+easier to manage
-needs highly trained staff
-special equipment needed
Satellite Communication :
An artificial satellite that relays and amplifies radio telecommunications
+covers a wider area
-expensive
wide area network:a set of links that cover a wide geographical area and is made up of lans
+data can be shared between lans
-costs a lot of money
voice communication: cellular phones transmit and receive using land-based towers
+cheap
need land based towers
types of local networks
peer to peer-This is where computers are linked to each other and they send data packets between/through each other.
+Don't need specialist
-more people log in performance decreases
client server:
This is where computers are linked to each other and they send data packets between/through each other
+All files are controlled centrally
-requires a network operating system
Types of servers
File-You can store and access file from this
+Easy user management
-Access to any file from any computer you log in
Print-Used for printers to be able to get sent the data
+Can be shared
-Single point of failure as if one shutdowns no more printing can be done
Application-
Allows client computers application without needing local installation and allows you to restrict access
+Easy to install applications
-High start up costs
Database-
This manages all the data allowing you to store , analyse and manipulate data
+More secure as its look after
-If server fails everyone will lose access.
Web-
Can be a physical server of software using HTTP to deliver the web content
+Can deal with high number of requests
-Requires a running server to do tests.
Mail-
is a server that handles and delivers e-mail over a network, usually over the Internet
+Email can be achieved or stored
-Can be spammed
Hypervisor-
Known as a virtual machine monitor and allows multiple operating systems to run on a single host system
1.You can run different operating systems
1.It shares resources so can slow down the performance