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Lower internet rates and faster internet

Wednesday, February 6th, 2013

Thanks to the University’s collaboration with SANREN and the implementation of the new Fortigate firewall, users on campus can now look forward to lower internet rates and faster, more stable internet. Both these projects were necessary if one takes into consideration that the university’s bandwidth usage doubled each year for the past 8 years. In spite of the increase in usage, rates were never increased.

 

RATES FOR INTERNET USAGE FROM 1 JANUARY 2013

Tariff A @R0.02/MB: Monday-Friday: 08h00-23h59

Tariff B @ R0.01/MB : Monday-Friday: 00h00-07h59, as well as Saturdays and Sundays

 

Take note that the relevant tariff is determined by the day and time the download process was completed.

•Example 1: If you start downloading a file of 3 MB at 16:55 on Monday and the download is completed at 17:10 (Monday), the tariff for Monday 17:10 will apply.

•Example 2: If the same file is downloaded from Monday 07:55 to Monday 08:10, the tariff for Monday 08:10 will apply.

 

 

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How do South Africans use their smart phones?

Friday, November 23rd, 2012

Ever wondered what other South Africans use their smart phones for? Well, designers Grant Barnard and Elizabeth Joss came up with a nifty infographics that will break it down for you.

According to the infographic cellphones are the most popular telecommunications device in South Africa and interestingly enough, also the device most used by South Africans to access the internet.

SOURCE: www.techtalkafrica.com

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Virtual classrooms become reality at Worcester campus

Friday, November 9th, 2012

Although use of visualised desktops has been in use at the Main Campus CUAs for several years, with considerable success, smaller campuses like Tygerberg and the Business School, have been unable to adopt the technology because of the prohibitive costs of the infrastructure that is required in the background. (network and storage) However in 2012 a new company, Pivot3 entered the market with a decidedly innovative solution to provide VDI for smaller enterprises.

But what is VDI or Virtual Desktop Integration?

Wikipedia describes VDI as the storing of a “virtualized” desktop on a remote central server, so that when users work from their local machine, all of the programs, applications, processes, and data used are kept on the server and run centrally.”

VDI allows users to run an operating system and execute applications from a smartphone or “thin client” where the processing power and capacity is delivered by the server and not the user’s own computer. The most obvious benefit is that there is no longer any need for huge, power-hungry and expensive workstations or personal computers.

Secondly, the “desktops” are managed centrally and thus can be updated and patched without the need for technicians to go from computer to computer, updating and managing patches, repairing broken operating systems.

With the completion of Stellenbosch University’s Worcester Campus – the hub of the Ukwanda Rural Clinical School, the Faculty of Medicine and Health Sciences identified VDI as a solution to deliver “virtual classrooms” and desktops to the students and personnel based at Worcester Campus. Although the Worcester Campus can permanently accommodate 50 students, there are large numbers of “visiting” students that are hosted at the Worcester Campus. Meeting the needs and requirement of this “passing traffic” on this small campus (with a single personnel member to run the ICT infrastructure) was an enormous challenge.

Fortunately, the FMHS was introduced to the Pivot3 VDI appliance solution – a blend of highly-tweaked Dell servers and VMWare’s VMView virtualization software – being introduced at a fraction of the cost of the equivalent VDI solution running at the Stellenbosch University Main Campus – SAN/Citrix/XenDesktop.

The FMHS recognised the potential and cost-effectiveness of Pivot3’s VDI appliance solution, and purchased the first unit on the continent to be used in an academic environment.

The immediate benefit of Pivot3-VDI is that custom and standardised desktops can be delivered to students and personnel on the Worcester Campus, on demand and literally in seconds, without the need for extensive IT personnel to personally set up and configure individual computers. Old computers, laptops, tablets, Android cellphones can all receive and operate the same desktop and software.

However Pivot3 did not anticipate another possible use of their product – as a delivery mechanism for secure electronic exams! Stellenbosch University makes considerable use of e-assessment and LMS systems like WebCT/Blackboard and Moodle, but accommodating large numbers of students at the same time to write these online exams is a challenge. With a product like Pivot3, the FMHS will be able to allow students to use their own devices (BYOD) to write electronic exams, by delivering preconfigured and secure desktops on demand for the exams increasing the capacity of the FMHS for electronic exams.

Worcester Campus and FMHS is currently engaged in extensive trials of its new VDI solution, and by the middle of 2013 will have a fully deployed VDI solution for desktops and electronic exams to approximately 100 students and personnel.

ARTICLE BY DAVID WILES

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Every cloud has a silver lining

Friday, August 31st, 2012

Make no mistake, the movement towards cloud computing is a very real one, but before you get overly excited and send all your sensitive and academic information to a cloud, it’s important that you know the pros and cons, as well as the risks involved with this growing phenomenon.

ADVANTAGES

Probably the biggest advantage of cloud storage is the possibility of having access to your data or software from anywhere at any time from any appliance. You no longer have to carry around your laptop, flashdisk or external hard drive to ensure you have your data on hand at all times.

Thanks to data stored in a central location and being accessible via the internet, you can easily share documents and colleagues can collaborate on the same document without having to coordinate changes by email. All your documents will ideally be in one place, making it easier to find your documents. Google Docs for example, stores your documents in chronological order and also allows you to store them in folders.

For companies there are no upfront capital costs and fewer overhead expenses. The organization pays only for using the services; it saves on maintenance, user licenses, and expenses such as electricity and rack space. With cloud storage you needn’t worry about natural disasters – your data will be safe and sound, even if your office burns down or the geyser floods your study.

DISADVANTAGES

As we’ve seen, cloud storage has quite a few advantages, but unfortunately there’s one big disadvantage. It only works if you have internet access. The cloud is dependent on the internet and if the Telkom or Mweb experience problems, the cloud and your data is inaccessible.

Performance is also dependent on internet speed and the number of users accessing the cloud. Even though cloud computing may save companies costs on overheads, the costs of usage can become a nightmare if it’s not monitored and managed. Be very careful when using multiple devices, especially if you share folders with other people. If you share a 500MB file with three other people it will sync three times, in other words a total of 1500MB at your cost. If you sync the file to your pc, iPad and iPhone you pay each time and if you use 3G (which costs between 15c and R1-00 per MB)  this could amount to quite an expense if done regularly. Closely monitor your internet account if you use cloud storage otherwise you might be in for a surprise at the end of the month.

Privacy and security are important concerns when it comes to cloud computing. Safety measures to protect users are in place, but the level of security and privacy provided is still a grey area. There is not enough information to prove or disprove the credibility of the cloud for privacy and security overall. In effect the cloud service provider would be able to access information between the user and company at any time and change or delete data.  

Physical control of the Private Cloud equipment is more secure than having the equipment off site and under someone else’s control. Customer data may also not remain in the same data centre or on the same provider’s cloud. This causes legal concerns regarding jurisdiction. Other issues such as trademark infringement and security concerns regarding the sharing of data resources can also arise.

Unfortunately cloud computing is also vulnerable to threats and more criminals will try to find new ways to exploit vulnerabilities in the system. There are many underlying challenges and risks in cloud computing that increase the threat of data being compromised. So choose wisely when picking a service to use with your important data and make sure it can be downloaded if needed, but also enjoy the flexibility those services provide.

(SOURCES: Regan Januarie (IT User Services), http://www.ahimajournal-digital.com), www.wikipedia.org)

<< What is the cloud?

>>  Which one to choose?

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Password synchronisation giving you a headache?

Friday, August 31st, 2012

Every 90 days you receive an email from helpinfo@sun.ac.za asking you nicely to change your password. We all know that, although it’s a bit of a nuisance, it’s also necessary for security reasons. But is there a way to simplify the process?

In 2007 Microsoft Research conducted a study and found that the average user has 6.5 internet passwords, each person has approximately 25 accounts with passwords and has to enter 8 passwords per day.  And this was in 2007 – imagine what the statistics will look like 5 years later.

If you use more than one device, password changes can become a nightmare. But there are a few steps you can follow to make sure it goes a bit smoother.

Switch off all your devices except for one, for example your laptop.

Sign on at http://www.sun.ac.za/useradm, select the Change Password option and select a new password according to the guidelines supplied on the website. Log out of the network with the Logout option given on http://www.sun.ac.za/useradm. Log onto the network with your new password. Make sure you can access all your network applications – email, internet and networkspace. Switch on all the other devices and type in your new password.

Remember, you can change your password any time at http://www.sun.ac.za/useradm with the Change Password option. Try to stick to the guidelines to ensure you have a secure password – it will safe you a lot of effort and frustration in the long run. If you’ve forgotten your password, you can also reset is by browsing to staff portal.

More information and hints on password changes can be found at https://stbsp01.stb.sun.ac.za/innov/it/it-help/Wiki%20Pages/Change%20password.aspx

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