TheSaffaGeek

My ramblings about all things technical


1 Comment

VCP6-CMA track on the EMEA #vBrownbag

Now that my VCDX defence is over and hopefully I’ve done enough to be awarded an illustrious number I can pick up my old responsibilities for the EMEA vBrownbag of which I am one of the hosts and decided that the VCP6-CMA track would be a great one to do.

african children dancing - Lets learn Some vRA goodness

We are going to be going through the blueprint in order so that it is easy to follow and watch as well if you are subscribed to the iTunes feed. So starting next week Tuesday at 7pm GMT (Clocks have changed in Europe so this is GMT not BST) we will be doing objective 1 and it is being covered by one of the co-hosts of the vBrownbag, Frank Buechsel. You can register for the series and future vBrownbag EMEA sessions via the following link https://attendee.gotowebinar.com/register/8540909933274906113 and can also subscribe to the vBrownbag YouTube channel.

 

If you are interested in covering an objective on the vBrownbag then please get touch as we are always looking for presenters.

 

Gregg


Leave a comment

VCAP-CID Objective 1.4 – Determine Availability Requirements for a Conceptual Design

Knowledge

Identify availability options for management components.

  • Availability can achieved within the vCloud architecture in a number of different ways and via differing methods. I’m going to break them up into different categories and i’m not going to cover each one but if you understand the different methods I think when you are reading the vCAT or any other kind of design book you’ll be able to identify them with ease.
    • Redundancy: This is simply creating multiple instances of an important service to ensure that if one or more fail that the solution isn’t impacted by this. There are multiple examples of this but the most simple but one of the most important in my opinion is the creation and usage of multiple vCloud cells to ensure load balancing but more importantly redundancy in the event of a loss of a vCloud cell. You can also cover this further down the stack with Heartbeat in the vSphere layer(even though this has now been made end of life) ,multiple network cards from the physical networking and multiple redundant switches to multiple redundant storage processors.
    • Disaster Recovery/Failover: This is covered in a whole section in the vCAT which goes over methods of utilising products like SRM to configure disaster recovery of the management layer. For conceptual this is more about knowing what is and isn’t possible but also taking the availability requirements of the customer from a business impact analysis where it is deemed the amount of money a customer is willing to lose due to downtime and then equate this to a number of nines. The table below gives an example of the number of times compared to amount of downtime and with the larger the number of nines this will then mean more expensive solutions which you will need to advise your customer about (99.9 can be met by HA for example but 99.99 will require heartbeat and synchronise replication with QoS). For conceptual you don’t cover specific products but knowing that you will need a DR site with fast links between will cover this for example.

HA

Differentiate between management components and resource components.

  • This is simply determining what should be part of your management cluster and what should be part of your resource cluster. I think this is really straight forward as anything in your management cluster is used to provide services to you the vCloud administrator and the resource cluster/s are for your customers to provision to and is the pools of resources you configure as your provider virtual datacentres. The below image is a great example of a conceptual diagram of the management and resource clusters.

conceptual

Skills and Abilities

Explain compatibility of various vSphere high availability features with a vCloud design.

  • This is covered perfectly in appendix A of the vCAT Architecting a VMware vCloud pdf so I don’t see the need to explain it here and i think it is better if you go through that instead. The link to the online documentation centre is here 

Given customer requirements and constraints, determine appropriate customer Service Level Agreements (SLAs) for the conceptual design.

  • This is covered in more depth within objective 1.6 so we will cover this in that section.

Determine how given SLAs impact availability design decisions.

  • This is covered in more depth within objective 1.6 so we will cover this in that section.

Given customer requirements and constraints, determine how to achieve desired availability.

  • From the design workshops and requirements collecting you will have worked out what the customers requirements and constraints are and will then have to work with these to try meet them all. For this it is their availability requirements which will be as I mentioned above their permitted amount of downtime per year along with their RPO’s ,RTO’s , MTD’s and WRT’s. From this you will have to work with their constraints to design a solution that meets their requirements so for example if they have an RPO of 5 minutes for critical systems within the management cluster in the event of a site failure this cannot be achieved via SRM with vSphere replication. For the conceptual design my example isn’t applicable but knowing this kind of limitation will then mean you know conceptually what needs to be created (multiple sites with fast links that have near zero latency for multiple data service providers and storage that can achieve this)

Given customer requirements and VMware technologies, determine availability impact to the conceptual design.

  • I feel this is largely what i have mentioned above but now you are including VMware technologies limitations/capabilities into your thinking which I actually did above. You will need to know what is and isn’t possible with HA for example and how it’s can only provide a certain level of availability and is limited by the amount of restarts it can achieve at once whilst being possibly limited by priority groups.

If you feel I have covered something incorrectly please let me know as I’m learning like everyone else and I certainly don’t claim to be perfect (near it but not perfect Winking smile ). Also the vBrownbag covered the whole of objective 1 here.

Gregg


5 Comments

EMEA #vBrownbag

vBrownBagLogo-150x150That’s right, after having spoken to the infamous APAC and US vBrownbag teams at VMworld and via the VMware vExpert communities Arjan Timmerman and I have thrown our hats into the ring and have asked to borrow the guys vBrownbag’s and show the world that the EMEA VMware guru’s are the some of the best in the world.

We are looking to start doing them within the next few weeks and need all the VMware talent in EMEA to put their hands up and come present and for everyone to join the calls/webinars and contribute. We are looking to possibly follow two different tracks so as to not repeat what the APAC and US guys have done and so will be looking for people to present on objectives in the VCP5-IaaS and VCP5-DT exam blueprints. You can do any of the objectives so if you want to do the last objective for the IaaS then first come first served/booked.

We are thinking of doing it every fortnight on a Tuesday starting on the 23rd of October although if there is a very good amount of interest which I trust there will be then we can make it a weekly occurrence. We are currently looking to do it at 7PM GMT to allow everyone in Europe the time to get home.Please spread the word and lets show the VMware community the talent EMEA has to offer. You can register here for the webinars

We have created a Google form for people to start putting in their interest and what they want to talk about here.

Gregg and Arjan


1 Comment

All Things VMworld:Day 0

 

Yes I couldn’t think of a better title so I altered my normal title for this weeks proceedings 🙂 .

Due to there being so much information coming out of VMworld and certainly a large amount more in the coming week I thought it may be helpful for myself and hopefully others to list all the interesting news and views that are coming out of VMworld each day.

  • First has to be the rap video by Chad Sakac’s EMC vSpecialist’s. Christopher Kusek (@cxi) was the first person I noticed who posted on his blog all about how the “vSpecialists get the job done! “. A hilarious video for anyone in the virtualisation field and the quality of it is remarkable. I’ve sadly watched it about ten times already today

  • As I said in my last All Things Virtual, VMworld have their own channel on YouTube and already the  first Daily Wrap of VMworld 2010 is up and a very interesting video posted on their channel is the biggest news of the day about the not so secret news that vSphere 4.1 release is the last release of VMware ESX. As well as a video preview of the VMworld Solutions Exchange
  • Another big announcement is the release of VMware vCloud Director. As to not give wrong information and because I’m only learning about it now myself i won’t attempt to try explain but leave it to the professionals and both Eric Sloof and Duncan Epping have done two brilliant posting all about the release and what the product entails. Duncan’s posting is here and Eric’s here.
  • Next has to be Microsoft’s open letter to customers attending VMworld telling them how Microsoft feels they are more/as capable to provide the best services for people wishing to utilise the cloud in the future. This is a great bit of publicity for VMware in my opinion as it shows how strong Microsoft feels VMware are in the cloud computing arena. The letter is here (*Warning* this is a link that downloads the letter in it’s pdf format). To be fair Microsoft do make a very good point in weighing up the positives and negatives of both sides(as well as other vendors) and it’s great to see they have their own stall at VMworld as everyone wants a fair competition and for the best products to be decided by the users on a level playing ground.
  • Last is the summaries of other VMWorld news by Scott Lowe here,Dan Kusnetzky on ZDNET.com here and a fairly amusing posting by Larry Chiang of “What They Don’t Teach You at Stanford Business School“ fame with his 9 Lies Told at VMworld. Most amusing to me is due to poor layouts of the page it only shows 7 🙂 I purposely left out some things due to them being covered by Scott and Dan as no one likes the same stuff being repeated numerous times.

Well that’s my day 0 of VMworld summary. I’m sure I’ve missed a few things but i think I got all the best and important stuff.

Gregg