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vExpert 2015 – Consecutive years. Big prize to win ?

I learnt this morning that my nomination for vExpert’15 was successful. Its really an honour to be a part of the community which has given so much to me. As a quick thank you to the community and also to @pluralsight for their vast library of courses, I have decided to give out 12 month subscription to the community. But there is a gotcha, you need to answer the following questions as a comment to this blog, the answers which I like the best gets the voucher. So here you go ..

What is your Name and twitter username?

Do you follow me and @pluralsight on @twitter?  

Which Certifications do you currently hold ? 

Which certifications do you want to study for ? 

Why do you want to be a #vExpert /#CiscoChampion / #EMCElect ?

Do you want to get to Architect level certifications? If so which ones? 

What do you do when someone junior to you asks you a very simple question? 

What part of being in vCommunity do you like? 

How are you involved in the vCommunity? If not, how will you change that?

To give everyone a fair chance, the winner would be announced next Friday  by a twitter DM, so if you don’t follow me yet, there is still time.

VMware’s Year In Review: Hybrid Clouds,…


VMware’s Year In Review: Hybrid Clouds,…

VmWare saw a 16% year-over-year growth in net revenues to $4.3 billion through the first three quarters of this year. The company reported a 14% increase in product licenses revenues over the prior year period to $1.8 billion. On the other hand, services revenues were up by 18% y-o-y to over $2.5 billion. VMware’s management attributed much of the growth to fast-growing market segments such as hybrid cloud services, network virtualization – or software-defined networking – and end-user computing.


VMware Advocacy

622 Mbps overall or 250Mbps per concurrent vMotion in Metro vMotion

One of the things that I have wondered during preparation for my VCDX defence is  why is there a requirement of 622 Mbps for VPLEX enabled metro clusters. According to the blog post by Duncan Epping, the minimum bandwidth required has been changed to 250Mbps per concurrent vMotion for Metro vMotion. Link is http://www.yellow-bricks.com/2012/10/31/bandwidth-requirements-for-long-distance-vmotion/

Here are my questions..

1.  to the VPLEX experts .. is the 5ms RTT and 622 Mbps minimum bandwidth requirement strictly for VPLEX Metro and not vMotion requirement from vSphere point of view?

2. One of my colleagues Andrew Best (@AusFestivus) raised a good point while I was bantering over twitter about this, VC doesnt know about the bandwidth between the 2 vMotion interfaces over stretched cluster.. or does it?

3. Following on from that is, If vSwitch has 2 x 10 Gbe uplinks and I have vMotion as well as VMNetwork traffic flowing through the uplinks (logically seperated by VLANs and a QoS applied to vMotion traffic to ensure 622 Mbps availability in the worst case of contention), does vCenter start 8 concurrent vMotions per host even during contention? Or will it go back to the Metro vMotion minimum of 250Mbps per concurrent and only allow 2 concurrent vMotions per host?

I am confused..

My understanding of Pivotal CF

I have never really understood how people can come up with ideas like Cloud Foundry and Cloud Physics (totally different but equally awesome nonetheless). The people who thought of this are no less important in this day and age than people who thought of virtualisation. So here is what my understanding is of Pivotal CF can do..

PaaS – What it supports: 

Multiple Programming Languages- Cloud Foundry supports almost all the new age programming languages like Ruby, Scala,Node.js, Erlang as well as well known ones like Java,Python etc

Multiple Frameworks – Cloud Foundry supports Rails, Sinatra, Spring, Express etc

Services – Cloud Foundry supports a whole lot of database and message queues, examples are MySQL, RabbitMQ, MongoDB, Postgres

Multiple cloud providers- Cloud Foundry supports VMware Cloud, AWS, Openstack etc. Doesnt matter who your underlying IaaS provider is .. Cloud Foundry works..

Pivotal CF architecture:

Application devs issue lifecycle requests such as deploying an application, this can be using a CF tools or something like Eclipse STS plugin. The requests are controlled using Cloud Controller Instances. Cloud Controller configures and manages the Pivotal CF environment and everything within it.

Deployed applications receive built in services for scaling, load balancing, DNS etc. Pivotal CF uses an approach called buildpacks. We can think of these as Lego Blocks of a complete runtime environment for particular applications. Rather than writing the specifications of how an application should run, developers can rely on these building blocks. These allow the developers to download and configure the runtimes, containers and include any libraries that they want.

Examples of build packs include Pivotal buildpacks for Java, Ruby, Node etc. Pivotal

As I read more about this incredible piece of software, I will write a little more about it.

Reference: Picture above taken from an internal  whitepaper.

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