Moroccanoil®, the global leader in oil-infused beauty, is thrilled to announce the NEW Moroccanoil Color Depositing Masks, a collection of dual-benefit hair masks that deposit pure pigments while providing the treatment benefits of a deep conditioning mask. The collection consists of seven curated shades for commitment-free, beautifully-colored hair that looks and feels healthy.| By Jonathan Gershater | Article Rating: |
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| March 16, 2012 10:00 AM EDT | Reads: |
15,577 |
Infrastructure as a Service is one of the three delivery methods of cloud computing (the other two are Platform as a Service and Software as a Service).
Users of IaaS have the expertise to maintain operating systems and applications, but don't wish to purchase server, storage and networking hardware and a datacenter to house the hardware. The cloud provider provides these services from a shared pool. The cloud user will then use the virtual machines to fulfill their computing requirements and may install their own operating system and will install their own applications on the virtual machines.

Some characteristics of IaaS:
- Elasticity: you can provision (add) or de-provision (remove) cloud instances to scale up or down your environment.
- Firewalls: may be host-based on each cloud instance (virtual machine - see below) and/or an Internet firewall that offers the customers restrictions on who can access their cloud servers.
- Multi-tenancy: The cloud servers are hosted on a shared infrastructure. This means that your cloud instances co-exist on the same hardware as another customer's cloud instances. To understand multi-tenancy, think of an apartment building (or block of flats). The renters/tenants have their own apartment, but share an elevator or stairway, foundation and roof. The owner of the building rents out apartments as needed and is responsible for the plumbing etc while each tenant is responsible for their own furniture and interior decorations. Similarly: an IaaS customer is responsible for their own applications, the hosting provider is simply providing the infrastructure.(also see segmentation below).
- Networking: is provided at the TCP/IP layer and is usually simple networking between the customer's cloud servers and Internet access from the customer's access point(s).
- Segmentation/Isolation: While resources are drawn from a shared pool and cloud tenants co-exist, there are levels of segmentation to isolate one cloud tenant from another, just like there are walls to segment or isolate one apartment from another.
- Storage: is usually delivered as raw (block) storage.
- Utility billing: The cloud provider will bill the cloud-user for the resources used. Infrastructure as a Service is akin to a utility company providing and billing for electricity, water and natural-gas. You share electricity with everyone on the power grid provided by the power station, and only pay for what you use.
- Virtual Machines: The servers, also called "cloud instances", are delivered to customers as virtual machines. A virtual machine is a server or workstation, with operating system and applications that appears to the user as a physical server. For more on virtual machines, see wikipedia here
Infrastructure as a Service is typically offered in three forms:
- Private cloud also called on-premise
- Public cloud
- Hosted private cloud
Private Cloud/ on-premise IaaS
An organization can build a private IaaS cloud and then provide infrastructure services to their internal departments or partners.
To build a private IaaS cloud, you need virtualization software to run a hypervisor.
Examples of hypervisor software are:
- KVM - Kernel-based Virtual Machine is available with most Linux distributions since kernel build 2.6 and is available as open-source software. Redhat is an example of KVM virtualization
- Xen - is another Linux based open-source hypervisor. Citrix licensed Xen and offers it as a commercial product. Rackspace and Amazon Web Services run Xen.
- VMware - the commercial company has an open-source offering as well.
- Microsoft Private Cloud
Once you have a virtualization or hypervisor layer, then you need cloud software to provide the on-demand and elasticity features of cloud computing as a Service.
Examples of IaaS cloud software are:
- Eucalyptus. Eucalyptus open-source and is available commercially.
- OpenStack. OpenStack is open-source and licensed as a commercial product by Rackspace, Nebula and many others
I will write tutorials in future blog posts, illustrating the steps to build an open-source private cloud IaaS offering.
Hosted private cloud
Hosted private cloud is a cloud offering for an organization's exclusive private use, but is not hosted in the organization's data center, but rather hosted by a hosting company. This provides an organization with the benefits of a private cloud, without the capital cost of setting it up.
Some hosted private cloud providers:
Public Cloud IaaS
Public cloud IaaS provides cloud instances to anyone with Internet access. Public IaaS is used by individuals or corporations who don't wish to use capital expenditure to purchase hardware and associated operating expenses. Unlike a hosted private IaaS cloud, the interface to a public IaaS cloud is open to anyone and access is restricted only by firewall and authentication credentials.
Some examples of public cloud:
- Amazon Elastic Compute Infrastructure (EC2), and Amazon Simple Storage Service (S3) - also called AWS (Amazon Web Services)
- Gogrid
- Rackspace
- SAVVIS
- Terremark
- Virtustream
Risks with Public cloud
Just as there are risks with living in an apartment building, example your upstairs neighbour's shower leaking into your living room, or neighbours eavesdropping on neighbour's conversations through the walls, so there are risks with public cloud. A neighbouring cloud customer could accidentally (or nefariously) gain access to your data on the shared storage or even view data on your cloud instance or access it directly.
Cloud management
The cloud-user may use a cloud management platform to manage public and private clouds. Cloud management is used to provision, automate, secure and govern public or private cloud instances.
Some examples of cloud management platforms:

Published March 16, 2012 Reads 15,577
Copyright © 2012 SYS-CON Media, Inc. — All Rights Reserved.
Syndicated stories and blog feeds, all rights reserved by the author.
More Stories By Jonathan Gershater
Jonathan Gershater has lived and worked in Silicon Valley since 1996, primarily doing system and sales engineering specializing in: Web Applications, Identity and Security. At Red Hat, he provides Technical Marketing for Virtualization and Cloud. Prior to joining Red Hat, Jonathan worked at 3Com, Entrust (by acquisition) two startups, Sun Microsystems and Trend Micro.
(The views expressed in this blog are entirely mine and do not represent my employer - Jonathan).
Moroccanoil®, the global leader in oil-infused beauty, is thrilled to announce the NEW Moroccanoil Color Depositing Masks, a collection of dual-benefit hair masks that deposit pure pigments while providing the treatment benefits of a deep conditioning mask. The collection consists of seven curated shades for commitment-free, beautifully-colored hair that looks and feels healthy.Sep. 6, 2019 09:00 AM EDT |
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The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today.
According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today.
According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
We all love the many benefits of natural plant oils, used as a deap treatment before shampooing, at home or at the beach, but is there an all-in-one solution for everyday intensive nutrition and modern styling?I am passionate about the benefits of natural extracts with tried-and-tested results, which I have used to develop my own brand (lemon for its acid ph, wheat germ for its fortifying action…). I wanted a product which combined caring and styling effects, and which could be used after shampo...
The platform combines the strengths of Singtel's extensive, intelligent network capabilities with Microsoft's cloud expertise to create a unique solution that sets new standards for IoT applications," said Mr Diomedes Kastanis, Head of IoT at Singtel. "Our solution provides speed, transparency and flexibility, paving the way for a more pervasive use of IoT to accelerate enterprises' digitalisation efforts. AI-powered intelligent connectivity over Microsoft Azure will be the fastest connected pat...
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