Skip to main content

iSCSI Virtualization: Ever heard of Stonefly?



StoneFly's Product Manager, Jame Ervin, has written a neat article on Intelligent IP SANs. They're cheap, they're smart and they're what a typical SMB would want!

Three Major Approaches to Virtualizing Operating Systems and Applications

A simple way to maximize system utilization and take advantage of the huge processing power of current hardware platforms is to use server virtualization. The three major approaches to virtualizing operating systems and applications include emulation, para-virtualization, and operating system virtualization. These are described in more detail below. Each type has specific benefits and drawbacks. Some approaches attract more media attention than others, but it is important during the planning phases to evaluate the approaches and choose what makes the most sense in your environment based on your priorities, whether they are performance, hardware utilization, consolidation, or application availability.

  • Emulation virtualization platforms use a reference hardware platform to emulate, which specifies the CPU, memory and add-on components independently of the actual hardware the VM is installed on; all of the guest machines also take advantage of the reference platform. This approach is ideal when the application requires specific hardware or systems to run properly, but it may have more performance limitations than other approaches since performance is limited to the reference platform. This approach can have multiple operating system kernels (Unix, Linux or Windows variants) running simultaneously on the same hardware.
  • Para-virtualization adds a hypervisor that manages the communications of the virtual machines to the physical hardware devices. In order for paravirtualization to work, the operating system needs to be "hypervisor" aware and know to look in the hypervisor to execute commands. It is difficult to use older operating system kernels with this approach, but it offers performance advantages over the emulation approach since the hypervisor acts like a standard OS that communicates with the actual hardware devices. This approach also allows the simultaneous use of multiple operating systems.
  • Operating system-level virtualization allows one machine to run multiple instances of the same operating system. Since this approach has a single, native operating system communicating with the hardware devices, it is very speedy and efficient, but this approach cannot be used to consolidate multiple operating system kernels.




Check out his article here.

Comments

  1. Thanks for the shoutout! Jame

    ReplyDelete
  2. smart. finally someone puts these virtualization technologies into perspective! Great perspective from StoneFly.

    ReplyDelete

Post a Comment

Popular posts from this blog

Redhot Future Of IT Part I :Marketing yourself as IT professional

I had promised about the "RedHot IT Future Series" and so we discuss here how you should market yourself EFFECTIVELY as an IT professional in this new (and dangerous) web age! Web is the place where you're a hero today and villain tomorrow. While there are lots of professionals who are active on the web, not all are enjoying a good reputation as they got "personal" with others and got into a cockfight. The passive IT professional has nothing to lose but nothing to gain at all!

I know "marketing" might seem as a greasy term but the idea is to have the truth about you out there. You know you're a good person and your family knows that you're really smart person but the rest of the world doesn't!

So the question is how do I market myself on the web as a true "nouveau IT professional". A guy who companies will be tempted to pick up the phone as say "Hey, we wanna talk with you. Can you fly over to Palo Alto (or Guatemala or Johan…

Redhot Future Of IT Part 2 :Virtualized Workplaces

Click on the title to hear what I have to say, alternatively click here to listen to what I have to say here.

So what is a virtualized workplace? Does it mean it does not exist? That it's virtual? Well in a certain way YES. This is where the future of our workplace is going to be. Well it is already a reality in some countries.

OK lets start by asking ourselves these questions:
Do you really bond with your colleagues? (think Team cohesiveness)
Do you spend great amount of hours talking about great things that you will do together? (think collaboration)
Do you really feel that you give 100% at work? (think effectiveness)
What do you really miss at your desk? (think personalization)
Is your desk comfortable enough? (Again think optimizing personalization, OK you have done your best to make it your place)Does it really matter to your employer that you are there for him/her? (think commitment)
Or do you get micromanaged over petty issues? (think mismanagement)
Do you see your employees perfor…

A Collection of Threnodies : Part 1

Whale Fall
-----------------

Dress me up in my new threads
clasp my greasy palms
grease my hair
I'm ready for the fall


Watch at all the decadence
watching the avalanche
I'm slipping down
losing my buoyancy


What's become of us
where have we come
this far, this close
close to the doors


I hear them, sublimal chants
I'm on the run
I race through the human sea
I am the king!


I'm the slave
to my own undoings
I'm the jester in my courtyard
We jest as we run


We're strolling on that thin rope
we grope as we rope
we're true heros
we're the survivors


we're the scavengers
we're the friends
we're the lovers
we're the unbred


Soon awaiting the fall
we're lurking on us
we're osedaxing us
we're soon going to be done
we'll soon be arrested




*osedax(bone devourer, newly discovered marine genus) feeds on a fallen(sunken) whale carcass(which is also called a whale fall). Read more here