Network customization Chapter 9

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

Network-based storage 9.1 Network-based storage

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

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.

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

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.

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

9.2 Voice over ip

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

activities TestOut Lab 9.2.3- Configure VoIP 1

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

Videos to watch

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

9.3 virtualization

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.

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.”

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

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

9.5 Cloud computing

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

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

Network customization Chapter 9