1. Network customization
Chapter 9

2. objectives Upon completion of this chapter, you should be able to:
Compare and contrast the use of networking services and applications
Differentiate between network infrastructure implementations
Identify the basic elements of unified communication technologies
Compare and contrast technologies that support cloud and virtualization

3. Network-based storage
9.1
Network-based storage

4. Network Attached Storage (NAS)
Centralized fault-tolerant storage for the network
Think of it as a special server for data sharing
Has its own file system for saving & serving files
Reads/writes files faster than a file server
Easy to expand w/out shutting it down
NAS does NOT talk to clients
Clients talk to file server which talks to NAS
Own file system as opposed to one that also has to manage printing, authenticating logins, etc. like a regular file server. (NFS or SMB)
Who would use them and what for? Can use at home for media; can use in business especially with mixed OS clients; backups/RAID

5. Nas examples
These are specialized servers. They have CPU and RAM. They attach to the network and have an IP address.
Left- as of 8/26/17 configured with 40TB for $2200.
Right- as of 8/26/17 configured with 2 8TB hard drives for $750.

6. Storage area network (san)
For larger enterprise networks
Faster & larger amounts of data
Type of LAN; all servers & clients connect to it
Cannot afford to lose data in communications
TARGET- is the SAN storage device
INITIATORS- are the servers that communicate with the SAN storage device using initiator software
Ways to communicate:
Fibre Channel- is very expensive but fast; also goes longer distances
iSCSI- can work on Ethernet so it’s easier and cheaper to implement

7. San examples Fiber 1st iSCSI 2nd
SAN can be in a data center (for better security and for them to manage it)
SAN is scalable, has a high fault tolerance (there’s many paths to the storage drives), plus it’s faster to access data.

8. Review- 3q
Which network storage options uses its own files system and is commonly used for home media?
NAS
Which network storage setup segments the storage area from the rest of the network?
SAN
What is the fastest and most expensive connection and protocol option for a SAN?
Fibre channel

9. 9.2
Voice over ip

10. voip Protocol sends voice data over IP network Protocols used:
Can use one network for voice & data
Protocols used:
SIP- Session Initiation Protocol
RTP- Real Time Transport Protocol (voice data stream)
Disadvantages:
Latency/Delay (must use circuit-switching)
UDP is used
Echo
Power loss
Implement QoS to ensure call quality
Good advantage is lower cost over analog phone connection costs.
VoIP is port 5060

11. activities TestOut Lab 9.2.3- Configure VoIP 1

12. Unified communications
Combines many types of communications
Voice, video conference, text, IM, voice mail
Real-time and non real-time
Status is known- busy, on call, offline, etc.
Components needed:
UC server
IP phone (hardware)
UC client software on PCs, tablets, phones
UC Gateway- connects digital network to analog PSTN

13. Videos to watch

14. Review- 3q
What device do you need to connect unified communication devices to the PSTN?
UC gateway
What is being converted by the UC gateway?
Digital to analog
What port does VoIP use?
5060

15. 9.3
virtualization

16. Virtualization A virtual computer within a computer (guest)
Physical computer is the host
Runs a separate OS from host machine
Uses host machine’s resources
Software in VM is sandboxed from rest of machine
Can’t mess up other systems
Used to test a new OS
Used to run software that works on a different OS
One physical device cuts costs for business
Can also be used to test viruses so they don’t affect the real network.

17. Hypervisor Software that manages a virtual machine Type 1 Hypervisor
Allocates resources to each virtual machine
Type 1 Hypervisor
Hypervisor installed on PC BEFORE OS
Communicates directly with hardware resources
Type 2 Hypervisor
Hypervisor installed on PC AFTER OS
Extra hop to talk to resources
Windows Hyper-V (Win 10/8) & Virtual PC (Win 7)
AKA Virtual Machine Manager (VMM)
The number of virtual machines running depends on RAM, CPU, etc.
Hyper-V must be enabled in Windows first, under “”turn windows features on/off.”

18. Virtual networking Other than virtual desktops, you can create:
Virtual servers
Virtual switches (connects the virtual devices)
 Forms virtual networks

19. Review- 3Q
What creates, runs and allows resources to be managed when using virtual machines?
Hypervisor
Your hypervisor is installed on a server BEFORE the OS. Which type is this?
Type I
Virtual PC & Hyper-V are included in Windows. Which type is this?
Type II

20. 9.5
Cloud computing

21. The cloud
Means you’re receiving services from a location other than yours
Run an app from the cloud
Save to the cloud
Public, Private and Hybrid Clouds
IaaS (Infrastructure as a Service)
Computing power & storage in the cloud
PaaS (Platform as a Service)
Development & deployment services
SaaS (Software as a Service)
Applications from the cloud
IaaS- Amazon Web Services
PaaS- Google App Engine
SaaS- Google Docs, Office 365

22. Review & study Complete the study guide handout Complete TestOut
Practice in Packet Tracer
Jeopardy review

23. Network customization
Chapter 9