A private cloud is owned and used by your organisation, hence the terminology "private". kili.io, amazon, e.t.c are public clouds, anybody can rent them. On 15/04/2014, Tech List Kenya <techlistkenya@gmail.com> wrote:

So basically, if I buy 1 powerful server, install ESX and then on top of that install 2 OS - win server for Exchange, Linux server for an Erp, can I say I have setup a private cloud?

What if I install Win server first instead of esx and then as guests, install another win server and a linux server, ref above. Does that still qualify as private cloud?

If I buy IaaS from kili.io or angani.co or Amazon, is that still private cloud?

On 4/15/14, Tony Olendo <tony.olendo@lrcafrica.org> wrote:

...

:)

Sent from Samsung MobileMutinda Kitana <geniusphere@gmail.com> wrote:Techlistkenya,

It's interesting you should mention clouds now, I had the very same question last week. From what I've learned, cloud is different in that it works like a raid array. A cloud OS is installed across several servers (one being the controller) and then a hypervisor (Vmware or Xen) is installed on top of that and finally operating systems are installed inside that. The cloud OS treats the servers (hardware) like they are one big server, just like a raid controller treats several disks as one.

So, in case one of the servers goes down then services are still available. Also 'clouding' helps with load balancing. Resources like storage space and processing power are divided across all hardware and any that isn't needed can even be turned off.

Regards,

-- Mutinda Kitana Project Manager GENIUSPHERE Cell: 0722-944455 --

Don't worry about getting motivated. Just get going.

~ Borrowed

On Mon, Apr 14, 2014 at 4:29 PM, Tech List Kenya <techlistkenya@gmail.com> wrote: Guys,

I think am getting confused by the cloud jargons. What exactly is the difference between private cloud and datacenter?

I am using the term data centre very loosely here to mean the corporate internal IT infrastructure

There is a lot of talk about setting up private clouds yet in my opinion this has been there for ages. Doesn't corporate file server, exchange server, etc constitute a private cloud?

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-- ______________________ Mwendwa Kivuva, Nairobi, Kenya twitter.com/lordmwesh

In the end, 'cloud' is pretty amorphous. In general, it refers to one of the three types of service: Software as a Service, Platform as a Service, and Infrastructure as a Service. Service means: 1. User can sign up by his or her self without 'talking' to anybody. This includes payment if necessary. 2. Broad availability (either within an intranet or on the Internet at large). 3. Multiple tenants participate. These may be different groups within an organization or different entities outside any one organization. 4. Scale 'infinitely' as far as the end-user is concerned. This obviously isn't true infinity - it just means that the user isn't worried about the underlying ability to scale. 5. Measurement - can the end user see whether limits are about to be hit. Public vs. private is mostly around #2 and #3. If the 'service' is accessible on the Internet, it's public. If it's not, then it's private. Infrastructure = compute and raw storage Platform = programmed resources that you hit with an API (i.e. a database as a service platform) Software = End user applications - Gmail would count here since it offers email client software. A cloud includes any of these services. If somebody sets up a few machines in their office, it's not a cloud unless other groups in the organization can use those machines without talking to the person who set them up. All 5 items above should be met in order to refer to it as a 'cloud'. -Adam -- Kili - Cloud for Africa: kili.io Musings: twitter.com/varud <https://twitter.com/varud> More Musings: varud.com About Adam: www.linkedin.com/in/adamcnelson On Tue, Apr 15, 2014 at 9:29 AM, Mwendwa Kivuva <Kivuva@transworldafrica.com

wrote:

On 15/04/2014, Tech List Kenya <techlistkenya@gmail.com> wrote:

...

So basically, if I buy 1 powerful server, install ESX and then on top of that install 2 OS - win server for Exchange, Linux server for an Erp, can I say I have setup a private cloud?

What if I install Win server first instead of esx and then as guests, install another win server and a linux server, ref above. Does that still qualify as private cloud?

If I buy IaaS from kili.io or angani.co or Amazon, is that still private cloud?

On 4/15/14, Tony Olendo <tony.olendo@lrcafrica.org> wrote:

...

:)

Sent from Samsung MobileMutinda Kitana <geniusphere@gmail.com> wrote:Techlistkenya,

It's interesting you should mention clouds now, I had the very same question last week. From what I've learned, cloud is different in that it works like a raid array. A cloud OS is installed across several servers (one being the controller) and then a hypervisor (Vmware or Xen) is installed on top of that and finally operating systems are installed inside that. The cloud OS treats the servers (hardware) like they are one big server, just like a raid controller treats several disks as one.

So, in case one of the servers goes down then services are still available. Also 'clouding' helps with load balancing. Resources like storage space and processing power are divided across all hardware and any that isn't needed can even be turned off.

Regards,

-- Mutinda Kitana Project Manager GENIUSPHERE Cell: 0722-944455 --

Don't worry about getting motivated. Just get going.

~ Borrowed

On Mon, Apr 14, 2014 at 4:29 PM, Tech List Kenya < techlistkenya@gmail.com> wrote: Guys,

I think am getting confused by the cloud jargons. What exactly is the difference between private cloud and datacenter?

I am using the term data centre very loosely here to mean the corporate internal IT infrastructure

There is a lot of talk about setting up private clouds yet in my opinion this has been there for ages. Doesn't corporate file server, exchange server, etc constitute a private cloud?

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Hello Techlist. When you think about it, what is the difference between Virtualisation and Cloud? Cloud has to have some form of automation such that the end user can provision a service (SaaS, PaaS, IaaS) by themselves typically form a portal. So virtualization creates a pool of resources:- compute, storage, switching e.t.c that can be provisioned. Cloud automates the provisioning. A private cloud is for in house consumption such that an organization's departments can log into a portal and provision a service they need. Public cloud is for external consumption typically resale e.g. Amazon web services, angani, cloudhop e.t.c. Hybrid cloud is a mix of the two. With inbuilt security features to separate them. Regards, J Doe. On Tue, Apr 15, 2014 at 12:04 PM, Thuo Wilson <lixton@gmail.com> wrote:

​I always fancy the way maganers/marketers/CEOs etc hype the "cloud" thing - you might think its something new you dont know of. Heavy jargons. At first when i heard bosses mention cloud after visiting seminars and exhibitions abroad, left me salivating and wanting to know what i have been missing in the cloud.

Whether private (that cloud over your head and house) or public (that which rains outside) - its a cloud and didnt come yesterday. Started long way back, just jargons and some flavours added as a marketing gimmick.

Kind Regards, Wilson./

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The only people who have come closes to knowing what The Cloud is are marketing people ... Developers are at the other end of that spectrum... On Wed, Apr 16, 2014 at 8:30 AM, Tech List Kenya <techlistkenya@gmail.com>wrote:

Thank you everyone for the answering my question. It's funny that I am still not getting the practical relationship to the dictionary definitions being given

I kinda want to tie the dictionary definition to real life. For instance, how does the user provision a service in real-life? Unless I'm mistaken, it's still the IT that will manage the access and use of the cloud service. Take google apps, for example. In as much as it is a public cloud service, an administrator has to create a user for that user to access the services.

On Tue, Apr 15, 2014 at 11:20 PM, John Doe <fivepings@gmail.com> wrote:

...

Hello Techlist.

When you think about it, what is the difference between Virtualisation and Cloud?

Cloud has to have some form of automation such that the end user can provision a service (SaaS, PaaS, IaaS) by themselves typically form a portal. So virtualization creates a pool of resources:- compute, storage, switching e.t.c that can be provisioned. Cloud automates the provisioning.

A private cloud is for in house consumption such that an organization's departments can log into a portal and provision a service they need. Public cloud is for external consumption typically resale e.g. Amazon web services, angani, cloudhop e.t.c. Hybrid cloud is a mix of the two. With inbuilt security features to separate them.

Regards, J Doe.

On Tue, Apr 15, 2014 at 12:04 PM, Thuo Wilson <lixton@gmail.com> wrote:

...

​I always fancy the way maganers/marketers/CEOs etc hype the "cloud" thing - you might think its something new you dont know of. Heavy jargons. At first when i heard bosses mention cloud after visiting seminars and exhibitions abroad, left me salivating and wanting to know what i have been missing in the cloud.

Whether private (that cloud over your head and house) or public (that which rains outside) - its a cloud and didnt come yesterday. Started long way back, just jargons and some flavours added as a marketing gimmick.

Kind Regards, Wilson./

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-- Those who are skilled in combat do not become angered, those who are skilled at winning do not become afraid. Thus the wise win before the fight, while the ignorant fight to win.

 I need a Rhombus 151T EtR Battery, Any leads will be appreciated With Kind regards Morris. M. =========================================================================== " You are entitled to your own opinion, but you are not entitled to your own facts." ~ Patrick Moynihan ===========================================================================

A private cloud is a cloud that is dedicated to a single organization. Often these private clouds are set up and managed by an enterprise’s own IT department, and run inside the corporate firewall. But they can also be deployed and managed at a third-party site, if desired. The key is that regardless of where they are deployed or who is managing them, private clouds are dedicated to the sole use of a single organization as opposed to Public cloud e.g Digital ocean, Amazon On Thu, Apr 17, 2014 at 3:37 PM, Phares <phares.kariuki@gmail.com> wrote:

he he he, interestingly enough, I spent my evening yesterday explaining cloud to marketing people who said that it's only developers who understand it :-).

Possibly this could be a side conversation during next weeks EANOG koroga.

On Thu, Apr 17, 2014 at 10:43 AM, Thuo Wilson <lixton@gmail.com> wrote:

...

On 16 April 2014 16:19, Mula G Njira <g2mula@gmail.com> wrote:

...

The only people who have come closes to knowing what The Cloud is are marketing people ... Developers are at the other end of that spectrum...

​Hehe, i see am not alone on this.​

Kind Regards, Wilson./

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