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Category Archives: overviews

Top 5 Community Blog Posts – Nov 26th 2012

Hello Everyone! I am Patricio Cerda, vExpert 2011 and 2012, and virtualization blogger.

Here I am again to write about the content of the Community Blogs and to provide you with the Top 5 recommended blog posts to read.

So, here is the selection for the last 2 weeks. (In no particular order).

 

Is SSD only for performance?
In this article Greg give us an overview about alternate uses for SSD (besides the traditional use for performance)
Read the full article here

 

VMware vCenter Multi-Hypervisor Manager 1.0
Here Samuele gives us a great review about the recently launched, vCenter Multi-Hypervisor Manager 1.0, which enables support for heterogeneous hypervisors in vCenter Server.
Read the full article here

 

vSphere5.1 Revision: Distributed vSwitch Port Bindings
In this post, Mike talks about Port Binding on Distributed vSwitches, something important in a vCloud Director environment, where the usage of ports on the switch is much more dynamic and in a larger scale.
Read the full article here

 

Garbage data in, garbage information out, big data or big garbage?
Here Greg makes a point about the garbage data and analyze how (or if) the use of big data could be the solution for this.
Read the full article here

Simple VXLAN lab on Workstation viewing traffic with Wireshark Part – 1
In this article kevin shows to us how to setup a virtual lab to create VXLAN and view the VXLAN traffic with Wireshark
Read the full article here

Enjoy the reading!!!

Top 5 Community Blog Posts – Nov 12th 2012

Hello Everyone! I am Patricio Cerda, vExpert 2011 and 2012, and virtualization blogger.

Here I am again to write about the content of the Community Blogs and to provide you with the Top 5 recommended blog posts to read.

So, here is the selection for the last 2 weeks. (In no particular order).

Why CIOs are Choosing the Vblock
In this article, Archie talks about the CIO role, and why they are choosing vBlock to get success in their jobs.  Archie lists 3 basic steps that a CIO must follow to be successful Read the full article here

 

Second Level Address Translation (SLAT)
What is SLAT? Jawad explains to us what is this processor technology.
Read the full article here

How to connect/interact with VCVA DB (DB2 and vPostgres)
Here Marcelo gives us a step-by-step guide to connect and interact with the vCenter Appliance Database.
Read the full article here

 

vCenter and the certificate saga
In this post, Bilal talks about why and how to replace the vCenter and ESXi host default certificates
Read the full article here

 

SplitRX Mode – Taking VMware Multicasting to the Next Level
Here Archie gives us an overview about SplitRX Mode, including a recap of networking basics and how packet forwarding is done on an IP network
Read the full article here

Enjoy the reading!!!

Top 5 Community Blog Posts – Sept 24th 2012

Hello Everyone! I am Patricio Cerda, vExpert 2011 and 2012, and virtualization blogger.

Here I am again to write about the content of the Community Blogs and to provide you with the Top 5 recommended blog posts to read.

So, here is the selection for the last 2 weeks. (In no particular order).

Entendendo as limitações do Esxi 5.1 FREE
In this post, Joao talks about vSphere Hypervisor, the free version of ESXi, and gives us a very good overview about the limitations included in this version.  Remember vSphere Hypervisor is a great solution to testing the advantages of virtualization and, of course, of VMware.
Read the full article here

How to check if NUMA is enabled on ESX hardware?
In this article, Marcelo shows to us how to check if NUMA is enabled on ESX hosts by using ESXTOP.
Read the full article here

Password security – its the length that matters (gigity)
Here Jon makes a point about Password Security and shows why longer passwords could be better than complex passwords.
Read the full article here

Are True Virtual Data Centers Coming?
In this article, Steven talks about Virtual Data Centers and how the new technologies make Virtual Data Centers start to become reality.
Read the full article here

Dr Performance: One Million IOPS
In this post, Mike analyses the most recent performance stress-testing on vSphere, which proves that VMware is able to smash through the barrier of 1 Million IOPS.
Read the full article here

Enjoy the reading!!!

Top 5 Community Blog Posts – Sept 10th 2012

Hello Everyone! I am Patricio Cerda, vExpert 2011 and 2012, and virtualization blogger.

Here I am again to write about the content of the Community Blogs and to provide you with the Top 5 recommended blog posts to read.  The last two weeks there were a lot of articles, so my apologies for the delay.

So, here is the selection for the last 2 weeks. (In no particular order).

Enhanced / Improved / X – vMotion in 5.1

In this post, Bilal talks about Enhanced vMotion which is included in the recently launched vSphere 5.1, and gives us a very good overview about all the improvements and  how Enhanced vMotion works.
Read the full article here

 

What is the Software-Defined Datacenter?

Here Mike give us a really great explanation about what is “Software-Defined Datacenter”.  This term has been used very often the last weeks, specially at the VMworld keynotes, so now we can better understand about what this term implies.
Read the full article here

 

PHD Virtual Backup 6 and Instant VM Recovery

Antone talks about a new feature in PHD Virtual Backup, which provides a quick recovery from backup, and explains how this works.
Read the full article here

 

Does software eliminate or move location of vendor lock-in?

Here Greg talks about the vendor lock-in, and the claim of software vendors about that their solution eliminates vendor lock-in.   Truth or half-truth?
Read the full article here

 

Part 1: What’s New vSphere5.1: The Web-Client

In this article, Mike gives us an overview about the new vSphere Web Client (Adobe Flex based), which replaces the traditional vSphere Client (C# based).
Read the full article here

Enjoy the reading!!!

Top 5 Community Blog Posts – Aug 27th 2012

Hello Everyone! I am Patricio Cerda, vExpert 2011 and 2012, and virtualization blogger.

Here I am again to write about the content of the Community Blogs and to provide you with the Top 5 recommended blog posts to read.

So, here is the selection for the last 2 weeks. (In no particular order).

The SMB and VMworld
Mike Laverick talks about the SMB coverage at VMworld 2012 in San Francisco. The Vmworld 2012 has a lot of news focused on SMB Market.
Read the full article here

Preparing for VCP5
Jonathan makes a nice compilation of resources for VCP 5 exam preparation. This post includes some tips and advices in order you get prepare to this exam.
Read the full article here

PHD Virtual – Backup review
Bilal makes a great review about PHD Virtual, a useful solution to make backups on our virtual environment.
Read the full article here

IBM buys flash solid state device (SSD) industry veteran TMS
How much flash (or DRAM) based Solid State Device (SSD) do you want or need?
In this article, Greg talks about the latest IBM adquisicion, Texas Memory Systems (TMS), an industry veteran, in order to get more SSD capabilities.
Read the full article here

SOS for PSOD
In this article, Bilal talks about the infamous PSOD and provides a compilations of links to helps us to face it.
Read the full article here

Enjoy the reading!!!

Virtualization Technology Comparison

Masssimo Re Ferre’, who has produced, among other resources, a very nice VDI broker comparison and hypervisor architecture overview, has just released a big table comparing different virtualization technologies. It’s more useful  than the equivalent over at Wikipedia, which isn’t surprising, since Massimo actually knows what he’s talking about and works with the technologies every day.

Massimo is careful to disclaim the entire thing, since you can’t really reduce these technologies to a matrix of checkmarks. Corrections/suggestions to him.

And this should go without saying, but I’ll say it anyway: although this is interesting in a technical curiosity sort of way, you shouldn’t base any purchasing decisions on something like this. A check mark doesn’t tell you how a feature was implemented or how well it works, and a list of features doesn’t tell you about how a solution will fit your business needs.

Just to take one row in the matrix — scalability. VMware Infrastructure has memory page sharing, which means that VMs can share common parts of their memory, like OS pages. This means you can get more VMs per physical box. This can significantly impact your ROI, and in many cases VMware is actually cheaper than other solutions that are "cheaper."

Table

Virtualization … Wars?

David Marshall, who has been virtualizing for years (he even was an external alpha tester for ESX Server), has written a good overview of where we are in the adoption of virtualization, and how we got here over the last few years.

Link: Virtual Strategy Magazine – Virtualization Wars.

  • Maximize resources – Perhaps the most common problem being
    solved with virtualization today – applications are running on their
    own dedicated servers, which results in low server utilization rates
    across the server environment. Server consolidation is used to help
    maximize the compute capacity on each physical server which therefore
    increases ROI on existing and future server expenditures.
  • Test and development optimization – Test and development
    servers can be rapidly provisioned by using pre-configured virtual
    machines. By leveraging virtualization, development scenarios can be
    standardized and quickly executed upon in a repeatable fashion. It also
    allows for increased collaboration, and ultimately helps with
    delivering a product to market faster and with less bugs.
  • Quickly respond to business needs – Deployment processes are
    becoming more difficult to manage in a complex environment and IT is
    unable to adapt as quickly to changing business requirements. Moving to
    a virtual environment helps with procurement, setup and delivery,
    giving IT the efficiency needed for rapid deployment.
  • Reduce business continuity costs – Virtualization
    encapsulation (creating an entire system into a single file) and
    abstraction (removing away the underlying physical hardware) help to
    reduce the cost and complexity of business continuity by offering high
    availability and disaster recovery solutions where a virtual machine
    can easily be replicated and moved to any target server.
  • Solve security concerns – In an environment where systems
    are required to be isolated from each other through complex networking
    or firewalls, these systems can now reside on the same physical server
    and yet remain in their own sandbox environment, isolated from each
    other using simple virtualization configurations.

It’s a good article; recommended. In the first part, David lays out where we are as an industry, and the current drivers and speed bumps on the way to virtual infrastructure. This would be good intro for anyone. The second part is where David talks about the last few years in the marketplace. This is interesting as context to the current players — such as Microsoft’s original perspective on virtualization as being useful as a migration tool for moving to new versions of Windows, which is very different from our current view of virtualization as freeing us from the rigid coupling of compute resources to physical hardware.

I have a bit of a problem with the title; perhaps it’s a reaction to the current world situation, but I have a hard time seeing what we’re doing as a "War," even metaphorically. This is not a mature market, like with the RDBMS in the 90′s and Oracle, Sybase, and Informix all slugging it out. It’s certainly a Race, with VMware in the lead, building value on top of the hypervisor while others are still building their core technology. We actually do a lot of teaching in the field, as customers try to figure out where they should be using hardware virtualization vs. other technologies. "War" has an unfortunately focus on the vendors themselves and the competition between them; I’d rather be listening to customers and how they’re solving problems.

–jtroyer