Started since Sunday 23 of Nov 2014,,,
Nowadays we do a survey with group of Sabafon Company's Engineers in some areas in Sana'a in order to find suitable locations to be placed for new antennas which going to enhance cell phone signals.


So, until we done of this survey I will report the benefits ,task challenges we faced proofed by video and pictures.

I have been given a task which is configuration outlook to connect and access Hotmail. 

Steps of solving this task:

1-start-control panel- mail

2- Click on Add- then type the profile name that you want For me I write “Afoori”- then click ok.

3- Click Manually configure server settings or additional server types, then click Next.

4- Click Internet E-mail, and then next.

5- Enter your name, email address and for the Account Type there is either POP: Post Office Protocol or IMAP: Internet Message Access Protocol. For my task I select POP.

IMAP	POP
The IMAP protocol, by default, allows the user to keep all messages on the server. It constantly synchronizes the e-mail program with the server and displays what messages are currently present. All the actions performed on the messages (reading, moving, deleting...) will be done directly on the server.	The POP protocol, by default, is set to download all the messages from the e-mail server onto your computer. This means that all the actions performed on the messages (reading, moving, deleting...) will be performed on one's computer. Because everything is kept on the user’s computer, the user will not be able to reopen messages from any location other than the computer where the messages have been downloaded.
Because everything is kept on the server the user will be able to access the e-mail in the inbox from any computer in the world connected to the Internet and can will always find the same settings in their e-mail account.	Once e-mail is downloaded it can be accessed only using the same computer.

6- Incoming mail server configuration:

Server:pop-mail.outlook.com

Port: 995

Encrypted Connection :SSL

User name: Your email address

Password: your password

7-Outcoming mail server STMP configuration:

Server: smtp-mail.outlook.com

Port: 25 (or 587 if 25 is blocked)

Authentication: Yes

Encrypted Connection: TLS

User name: Your email address

Password: Your password

8- Click Test Account Settings to check if the input configurations are correct or not.

I face problem with log onto incoming mail server (POP3) 

the problem was pop access in hotmail.com for my account is disable so what i did is ,

a- Access my hotmail

b- Click the gear icon in the upper right and then click More mail settings.

c-Under Managing your account, click Connect devices and apps with POP. 

d- Under POP, select Enable, and then click Save.

e-The problem fixed and Outlook is ready to use 

Follow Storage Area Network... 

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The research has been completed on the time and fulfills all the below objectives:

1- For the first objective which is snapshot and advantages of SAN has been given.

2- For the architectures of SAN: layer of SAN network with the figure has given an idea about SAN architectures.

3- For the techniques that SAN uses: Three techniques explained briefly, supported with figures for each techniques , although Fiber channel techniques consider as the best due to speed and data transfer of Fiber.

4- For topologies of SAN: four topologies mentioned and explained, supported with figures for each topologies.

5- For the recommendations,  the bellow points should be taken into consideration when SAN establish:

-          Appropriate cables for the wanted network and ensure that each cable must has the same data transfer speed, for the best cable is “Fiber Optic “.

-           Determine the network needed speed, so on that we can select the appropriate equipments.

-           Choose good quality hardware, switches for the most should be chosen carefully, often core switch such “Cisco Catalyst 4500E” is needed for high speed network.

  -References 

[1] Lippitt M, Smith E, "Network Storage Concepts and protocols TechBook", 2008.

[2] Norman D, "Fiber Channel Technology For Storage Area Networks".

4 November-12 November

This is what i  have done with SAN research until now.

The information of this research from references "will be written down when i finish ". 

The research duration end by 16 of October.. 

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Storage area network is type of network which a group of servers is connected via high speed cable with storage unit “Disk array”.

The main purpose of this Network is to keep the data storage safely from users’ PCs or servers with separated storage units, so any damages happen to the servers will not affect on the data.

The below figure show simple of SAN: 

Advantages of SAN,

            -High speed data transmission by using Fiber Optic Channel.

            -Central storage units allow many servers to access at the same time.

            -Secured technique for saving data, due to data isolated far of servers damages risk.

            - Minimize the number of servers used, instead of assigning file server for each network.

            - Easy data access with time saved.

            -This technology allows connecting servers with different OS such as, Red hat, Win…etc.

Storage area network Layers, 

SAN consist of 3 layers which are:

            -Host layer, user’s PC or servers

-Fiber layer, the middle layer which connects the PCs, servers with storage unites via routers,  switches or hubs.

            -Storage layer, which is the storage unit. 

Techniques of SAN: 

There are so many techniques of SAN in here some of that techniques.

1-      Small Computer System Interface SCSI, this technique is a parallel communication where several bits are sent as a whole, on a link with several parallel channels. This is contrast to serial communication where data sent one bit at a time. SCSI could transmit data as 160Mbps within maximum distance 25m, but it consider as an old technique, because it allows to be connected with limited number of servers.

 2-      Fiber channel, this technique is high speed technology used to connect computer data storage, as well it consider as very speed connection type for storage area network.  So fiber optic cables is used to connect data storage units with servers where 10Gbps is the maximum rate of data transmission, due to that high rate of data transmission with fiber optic, it recommended if we have live stream conference and we want to video record at the time sending the recorded video to the storage units.

3-Disk array is data storage system that contains multiple disk storage, cache memory and controller.

 There is some of the disk storage leave empty so that, if one of the storage unit becomes full, the controller efficiently distributes the coming data across the empty storage while cache faster the process of data storage. 

Topologies of SAN,

There are physical topology and logical topology for the environment of fiber channel.

The logical topology is the path established between the operation system with devices “switch or hub” and the associated storage ports.

The physical topology is, interconnects among devices “storage units, switches, servers…”

The figure below describes with more details:

1-      Point to point topology, 

      consider as the simple design, in short it’s a server connects with disk storage, means no need for a fiber layer. Within this topology many servers can connect with the storage unites depends on the storage unit ports.

2-      Arbitrated loop topology,

This type of topology has fiber layer, where fiber channel hub used to connect between the servers and storage unit. But as the Hub is not efficient and old to be used switch is the replaced.   

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I have been assigned for new project which is "SAN" Storage Area Network.
The outcomes should be:-

First, Snapshot about SAN  and what is the advantages.
Secand: Find the architectures of SAN.
Third: Find more than two techniques and what is the best.
fourth: Find the topologies of SAN.
Last : Recommended standards should be taken for establishing San.
Start from today read and find references about this projects.

System admin in IT operation is in charge on managing the local area network in the company.

Some of the tasks that system admin responsible are:

- Installing and configuring system hardware and software such as"Servers"

-managing multi-users computing environment, like LAN

-managing users account and privileges of each unit and each user as individuals.

-upgrading the softwares.

-Data backup and recovery tasks.

The new thing that we learnt is how to install windows server 2008 and we have been assigned to install win server 2008.

 Hardware requirements for installing win server 2008 as minimum we needs:

2GHZ processor

2GB RAM

60GB hard disk

Steps of installation windows server 2008 as follow:

1-insert the CD of windows server 2008

2-reboot the pc

3- Wait until the screen comes up asking to select the installation language, select English then press next

4-press install now

5- Inter the product key

6-after inserting the product key the installation process will determine what kind of windows server you own, otherwise if u didn’t insert the product key, the installation process will ask you which windows server you want to download.

7-choice full version

8- Accept the license terms

9-Select the first disk to install the windows.

10- wait until the installation process reboot the computer

11- CTRL+ALT+DEL to log in

12- Select other user to log in, type administrator then enter

13- You will be asked to change your password

14- Type any hard password and make sure you will not forget it then, press ok.

15- The initial server configuration will come up, such as data and time, configure network, update the server, customize the server...etc so after initial some of that configuration tasks, windows server starts working