%PDF-1.3 1 0 obj << /Type /Catalog /Outlines 2 0 R /Pages 3 0 R >> endobj 2 0 obj << /Type /Outlines /Count 0 >> endobj 3 0 obj << /Type /Pages /Kids [6 0 R 13 0 R ] /Count 2 /Resources << /ProcSet 4 0 R /Font << /F1 8 0 R /F2 9 0 R /F3 10 0 R /F4 11 0 R >> /XObject << /I1 12 0 R >> >> /MediaBox [0.000 0.000 612.000 792.000] >> endobj 4 0 obj [/PDF /Text /ImageC ] endobj 5 0 obj << /Creator (DOMPDF) /CreationDate (D:20250620092445+00'00') /ModDate (D:20250620092445+00'00') /Title (Report 06-2025) >> endobj 6 0 obj << /Type /Page /Parent 3 0 R /Contents 7 0 R >> endobj 7 0 obj << /Length 6250 >> stream 0.702 0.800 0.816 rg 34.016 34.016 543.969 723.969 re f 1.000 1.000 1.000 rg 45.266 78.662 521.469 668.072 re f 0.773 0.773 0.773 rg 0.773 0.773 0.773 RG 45.266 746.734 m 566.734 746.734 l 565.984 745.984 l 46.016 745.984 l f 566.734 746.734 m 566.734 78.662 l 565.984 78.662 l 565.984 745.984 l f 45.266 746.734 m 45.266 78.662 l 46.016 78.662 l 46.016 745.984 l f 0.200 0.200 0.200 rg BT 61.016 693.716 Td /F1 14.4 Tf [(WHAT IS THE CLOUD?)] TJ ET 0.400 0.400 0.400 rg BT 61.016 664.909 Td /F2 9.0 Tf [(Posted on )] TJ ET BT 104.045 664.909 Td /F3 9.0 Tf [(January 01,1970)] TJ ET BT 173.588 664.909 Td /F2 9.0 Tf [( by )] TJ ET BT 188.096 664.909 Td /F3 9.0 Tf [(IT Communications)] TJ ET 0.153 0.153 0.153 rg BT 61.016 637.420 Td /F4 9.0 Tf [(This isn't a philosophical musing or the start of a poem. We're )] TJ ET BT 61.016 626.431 Td /F4 9.0 Tf [(referring to the type of cloud containing data, not water. The )] TJ ET BT 61.016 615.442 Td /F4 9.0 Tf [(latest buzzword the past few months is "cloud computing", but )] TJ ET BT 61.016 604.453 Td /F4 9.0 Tf [(what is "the cloud"?)] TJ ET BT 61.016 584.464 Td /F4 9.0 Tf [(Cloud computingis the use ofcomputingresources \(hardware )] TJ ET BT 61.016 573.475 Td /F4 9.0 Tf [(and software\) delivered as a service over anetwork \(typically )] TJ ET BT 61.016 562.486 Td /F4 9.0 Tf [(theInternet\).In other words, it's a grid of computers set up in )] TJ ET BT 61.016 551.497 Td /F4 9.0 Tf [(such a way that it can host a service to deliver software and )] TJ ET BT 61.016 540.508 Td /F4 9.0 Tf [(data. Websites and server-based applications run on specific )] TJ ET BT 61.016 529.519 Td /F4 9.0 Tf [(computers or servers.)] TJ ET BT 61.016 509.530 Td /F4 9.0 Tf [(The difference with a cloud, however is that the cloud uses a )] TJ ET BT 61.016 498.541 Td /F4 9.0 Tf [(collective virtual computer, which runs independently from )] TJ ET BT 61.016 487.552 Td /F4 9.0 Tf [(another computer or specific server configurations. To quote T. )] TJ ET BT 61.016 476.563 Td /F4 9.0 Tf [(Grance and W. Jansen)] TJ ET BT 155.561 476.563 Td /F2 9.0 Tf [(\(Guidelines on Security and Privacy in )] TJ ET BT 61.016 465.574 Td /F2 9.0 Tf [(Public Cloud Computing\))] TJ ET BT 160.547 465.574 Td /F4 9.0 Tf [(- "The common characteristics most )] TJ ET BT 61.016 454.585 Td /F4 9.0 Tf [(\(clouds\) share are on-demand scalability of highly available and reliable pooled computing resources, secure access to )] TJ ET BT 61.016 443.596 Td /F4 9.0 Tf [(metered services from nearly anywhere, and dislocation of data and services from inside to outside the organization.")] TJ ET BT 61.016 423.607 Td /F4 9.0 Tf [(With broadband internet, the need to have the software run on your computer or on a companys site is becoming less and )] TJ ET BT 61.016 412.618 Td /F4 9.0 Tf [(less essential. A lot of the software that people use nowadays is completely web-based. The cloud takes advantage of that )] TJ ET BT 61.016 401.629 Td /F4 9.0 Tf [(to bring it to the next level. Proponents claim that cloud computing allows enterprises to get their applications up and )] TJ ET BT 61.016 390.640 Td /F4 9.0 Tf [(running faster, with improved manageability and less maintenance, and enables IT to more rapidly adjust resources to )] TJ ET BT 61.016 379.651 Td /F4 9.0 Tf [(meet fluctuating and unpredictable business demand.)] TJ ET BT 61.016 359.662 Td /F4 9.0 Tf [(End users access cloud-basedapplicationsthrough aweb browseror a light-weight desktop ormobile appwhile the)] TJ ET BT 61.016 348.673 Td /F4 9.0 Tf [(business softwareand user's data are stored on servers at a remote location.Cloud computing relies on sharing of )] TJ ET BT 61.016 337.684 Td /F4 9.0 Tf [(resources to achieve coherence andeconomies of scalesimilar to autility\(like theelectricity grid\) over a network.At the )] TJ ET BT 61.016 326.695 Td /F4 9.0 Tf [(foundation of cloud computing is the broader concept ofconverged infrastructureandshared services.)] TJ ET BT 61.016 306.706 Td /F4 9.0 Tf [(Please keep in mind that cloud storage is NOT recommended for institutional and academic information \(see definitions )] TJ ET BT 61.016 295.717 Td /F4 9.0 Tf [(below\). If you do decide to make use of cloud storage, rather use it for your personal information or non-critical information.)] TJ ET BT 61.016 275.728 Td /F4 9.0 Tf [(In terms of the draft)] TJ ET BT 141.557 275.728 Td /F2 9.0 Tf [(Information Management Policy)] TJ ET BT 268.106 275.728 Td /F4 9.0 Tf [(, the following information categories and sensitivity categories are )] TJ ET BT 61.016 264.739 Td /F4 9.0 Tf [(defined:)] TJ ET BT 61.016 244.750 Td /F4 9.0 Tf [(1.1.1. Two overarching information categories are defined:)] TJ ET BT 61.016 224.761 Td /F4 9.0 Tf [(a\))] TJ ET BT 84.029 224.761 Td /F1 9.0 Tf [(Academic information)] TJ ET BT 178.547 224.761 Td /F1 9.0 Tf [()] TJ ET BT 181.049 224.761 Td /F4 9.0 Tf [(is information that comprises academic content \(including library, learning materials, )] TJ ET BT 61.016 213.772 Td /F4 9.0 Tf [(research output, etc.\).)] TJ ET BT 61.016 193.783 Td /F4 9.0 Tf [(b\))] TJ ET BT 81.527 193.783 Td /F1 9.0 Tf [(Institutional information)] TJ ET BT 184.532 193.783 Td /F1 9.0 Tf [()] TJ ET BT 187.034 193.783 Td /F4 9.0 Tf [(is information that the University as organisation, including its staff, students and other )] TJ ET BT 61.016 182.794 Td /F4 9.0 Tf [(stakeholders, owns, or is the custodian of, as well as any information that is not classified as academic information.)] TJ ET BT 61.016 162.805 Td /F4 9.0 Tf [(1.1.2. 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What is the “cloud”?

This isn’t a philosophical musing or the start of a poem. We’re referring to the type of cloud containing data, not water. The latest buzzword the past few months is “cloud computing”, but what is “the cloud”?

Cloud computing is the use of computing resources (hardware and software) delivered as a service over a network (typically the Internet). In other words, it’s a grid of computers set up in such a way that it can host a service to deliver software and data. Websites and server-based applications run on specific computers or servers.

The difference with a cloud, however is that the cloud uses a collective virtual computer, which runs independently from another computer or specific server configurations. To quote T. Grance and W. Jansen (Guidelines on Security and Privacy in Public Cloud Computing) – “The common characteristics most (clouds) share are on-demand scalability of highly available and reliable pooled computing resources, secure access to metered services from nearly anywhere, and dislocation of data and services from inside to outside the organization.”

With broadband internet, the need to have the software run on your computer or on a company’s site is becoming less and less essential. A lot of the software that people use nowadays is completely web-based. The cloud takes advantage of that to bring it to the next level. Proponents claim that cloud computing allows enterprises to get their applications up and running faster, with improved manageability and less maintenance, and enables IT to more rapidly adjust resources to meet fluctuating and unpredictable business demand.

End users access cloud-based applications through a web browser or a light-weight desktop or mobile app while the business software and user’s data are stored on servers at a remote location.Cloud computing relies on sharing of resources to achieve coherence and economies of scale similar to a utility (like the electricity grid) over a network. At the foundation of cloud computing is the broader concept of converged infrastructure and shared services.

Please keep in mind that cloud storage is NOT recommended for institutional and academic information (see definitions below). If you do decide to make use of cloud storage, rather use it for your personal information or non-critical information.

In terms of the draft Information Management Policy, the following information categories and sensitivity categories are defined:

1.1.1.      Two overarching information categories are defined:

a)      Academic information is information that comprises academic content (including library, learning materials, research output, etc.).

b)     Institutional information is information that the University as organisation, including its staff, students and other stakeholders, owns, or is the custodian of, as well as any information that is not classified as academic information.

1.1.2.      Four categories of information sensitivity, in descending order of sensitivity, are defined:

a)      Confidential information is information that was provided or is used in confidence and that may only be accessed by or shared with authorised persons on a need-to-know basis.

b)     Personal information is a specific type of Confidential Information and is defined as information that can be used to identify an individual or information about an identifiable individual and information that is defined by relevant legislation as personal information.

c)      Operationally sensitive information (default sensitivity) is information that is used in the day-to-day operations of the University and is classified as sensitive to very sensitive depending on the extent to which its divulgence will adversely affect the University’s image or operations.

d)     Public information is published for public or general.

<< What are the advantages and disadvantages of cloud storage?

 

SOURCES: http://www.makeuseof.com/tag/cloud-computing-work-technology-explained/ & http://en.wikipedia.org/wiki/Cloud_computing

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This entry was posted on Friday, August 31st, 2012 at 1:00 pm and is filed under General, Internet. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

2 Responses to “What is the “cloud”?”

  1. Sonja van der Westhuizen says:
    02/09/2012 at 1:34 am

    Hi Steph,

    thanks for your comment. There are many more options we didn’t cover, so thanks for mentioning Mendeley. For those interested – Mendeley is a free reference manager and academic social network that can help you organize your research, collaborate with others online, and discover the latest research. http://www.mendeley.com/.

  2. Steph Bredenhann says:
    02/09/2012 at 12:22 am

    Good article, but what about sites that manages references like Mendeley, etc. Acedemics should use these sources or are they not classified as web cloud services?

 

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