Aug 192010

NOTE: this is currently speculation and not yet confirmed by VMWARE.

It looks like vmware are about to pull the plug on the VCDX 3 program as of the 30th of August 2010 (thats the romour anyway). All Exams and Design Submissions must be passed and submitted by this date.

This leaves me, along with quite a few other people, with very little notice to get the exams and designs finalised and submitted.

My personal position is that I have passed the Enterprise exam but not the Design exam (failed it once). As a result I have spend hundreds of pounds on something that looks like its going to be worthless.

I have 2 main issues:

  1. Why have there not been any anouncments from vmware certification? I know people have recently taken the enterprise exam and were not informed of the pending withdrawal of VCDX3 thus anyone that thought they could take their time for the rest of the process have been caught out.
  2. Why is there no meaningful qualification at each stage of the VCDX3 process like there is with the VCDX4. I don’t really understand why there has not been an equivalent of the VCAP for stages in the VCDX3. I would not have as much of an issue with this if my VCDX3 Enterprise exam actually counted for something.

The VCDX3 process was a little painful and drawn out, but to make matters worse vmware now seem to have left a significant number of people in limbo as there is so much confusion due to no official announcement. Vmware have always been good at connumication and it puzzles me why we have ended up in this situaltion.

As the upgrade path allows anyone that has passed the design exam in VCDX3 to take the design exam in VCDX4 and skip the Administration exam.

However when I went to book my exam on the Pearson Vue website the entire exam has been removed from site. Hence I can not book the exam.

This leaves me (and others) with the very real possibility of wasting allot of time and money on a qualification that means next to nothing in the industry (re the Enterprise Exam only).

Please could you do the poll bellow so I can get an idea how many of you are effect by this:

Sorry, there are no polls available at the moment.

Post to Twitter

Jul 092010

I had a client recently that had brought a small company in to P2V a small set of infrastructure. I was brought in to “fix” the issues that they left.

They made a small mistake that made me have to do some reading.

They were using Cisco EtherChannel to aggregate 4 GBE ports. This is fine and is an accepted way of increasing your bandwidth however they were not seeing the performance benefits that it should have brought. After some investigation I noticed that only one of the NIC on the ESX server was actually being used with any great demand.

Reading the below article led me to the load balancing option in the vswitch.

They had it set to “Route based on the originating virtual port ID”. The load balancing needs to be “Route Based on IP HASH”.

Also do not use beacon probing with IP HASH load balancing and do not configure standby up-links with IP HASH load balancing.

Once this change was made it load balanced as you would have expected (once the ESX network services had been restarted).

Post to Twitter

Apr 262010

I thought I would share this experience with you as I was reminded of it by reading Dave Lawrence’s (The VMguy) blog –

While working for a customer that has a medium sized VI3 environment for VDI purposes I came across a limitation. The customer used SUN VDI as there VDI software. While I am not a expert in this area I have used various VDI products in the past and have learned that they are all (at a very very high level) quite similar.

They wanted to ramp up the number of images they had to around 2500. While this has little impact to the overall resource that was available it did mean that other considerations needed to be considered. In this case it was the max on the vcenter server. In VI3 it is 2000.

This left 2 options either upgrade to vsphere that can accommodate 3000 or change the sun vdi version to 3.0 and add a second vcenter (preferably in linked mode).

My contract finished before I got to find out what they have decided to do. I know any vmware architect worth his salt would probably spot that but i though it was interesting that my customer was just plodding ahead without even considering these type of issues.

Post to Twitter

 Posted by at 6:48 pm

Twitter links powered by Tweet This v1.8.3, a WordPress plugin for Twitter.