Apr 08 2014

VMware vExpert 2014


Last week I found out I have been awarded with the VMware vExpert 2014.




The vExpert program is a recognition to the contributions to those who have demonstrated significant contributions to the community and a willingness to share their expertise with others.

This is the 5th consecutive year I am awarded on the vExpert program and it’s a honor to me to be part of this select group or people that in one way or another go out of their way, beyond their day-to-day responsibilities, to help the virtualization community. This group of bloggers, podcasters, web-casters, twitters is amazing.

Congratulations to all vExperts 2014!
Original Blog Post by John Troyer: vExpert 2014 awardees announced

I would like to thank John Troyer, Corey Romero, and the VMware Social Media & Community Team for their efforts to move this program forward internally at VMware.


This article was first published by Andre Leibovici (@andreleibovici) at myvirtualcloud.net.

Permanent link to this article: http://myvirtualcloud.net/?p=6175

Apr 06 2014

Nutanix 3450 up to half million IOPs with single block deployment

One of Nutanix partners (DH Technologies) created this video below demonstrating a Nutanix block with 4 nodes pushing almost half-million IOPS (483,492 IOps). This is over 120,000 IOps per node, potentially achieving astonishing 3.8 million IOPs in a 32 node cluster without the help of expensive PCIe flash devices like FusionIO or LSI Nytro WarpDrive, and potentially getting up to tens of millions of IOPs since there’s no theoretical limits for the Nutanix cluster size.

This is more IOPs per-node than a EMC VNX-7500 series will push for an entire array; or more than a EMC V-MAX platform will be able to push if we have only two Nutanix blocks. Also, more than any other SAN will be able to provide due to bottlenecks given the limited storage controller architecture. Nutanix storage controllers scale-out along with the cluster, not running into bottlenecks.

It all sounds music to my ears, except because of a little very important caveat. The workload has been crafted as 100% read IO with 4Kb blocks, and the working set is only large enough to fit into Nutanix caching tier.

Purposely, most architecture documents, white papers or benchmarks published by most of the vendors will demonstrate their performances in the way that best suits their platforms, and always achieving numbers that will blow you away!

The very important point that I want to make in this article is so you know the next time you see a vendor saying that they can achieve 500,000, 2 million or 5 million IOps you should not trust them! At least, not until before you see and understand how exactly those numbers were generated. This is also valid for other scale-out solution!

Getting the right storage workload requirements can be very difficult. The reason for that is the lack of information about your real production workload; and I guarantee it’s not 100% read with 4Kb blocks.

If you do not have information about your workload or if it’s a new working set it is possible to use some pre-trended baseline numbers, but this would be only an indication to what the workload would likely be. It could be a point out of the curve in many cases.

One of the most important items beyond the number of IOPs is the read and write IO pattern. The Read/Write ratio used determine how many spindles would be required to support the workload in a RAID configuration type ‘x’. Nutanix doesn’t have the concept of RAID groups because read IOs will frequently come from RAM or local SSD due to data locality concepts, while write IOs will always go to the local SSD and to n additional hosts depending on the replication factor (I will write more about that in the future).


Here are two good article by Josh Odgers describing Nutanix data locality concepts:



Ultimately, this video is very cool to watch! But again, be aware that this is only a workload demonstration that is unlikely to have any similarity to real workloads. Also, it’s interesting how easy it is to mislead and drag attention to an article just using titles ala ’The Register‘.


Thanks to DH Technologies for providing this!

This article was first published by Andre Leibovici (@andreleibovici) at myvirtualcloud.net

Permanent link to this article: http://myvirtualcloud.net/?p=6162

Mar 31 2014

Join Nutanix and Me for Citrix Synergy 2014

Screen Shot 2014-03-24 at 8.05.46 PM

Wow! How exciting….  for the first time ever I am attending a Citrix Synergy Conference and I also have been given the opportunity to present a Thought Leadership session during the conference. Citrix was one of the End-User Computing pioneers and makes me very grateful to be presenting with such amazing group of individuals.

I would like to invite you all to come to my session and learn more about web-scale technologies. This will not be your average sales pitch, but rather a holistic view on hyper-convergence and web-scale solutions, and the use of these technologies for VDI.


Title: The role of hyper-convergence in the future of VDI designs

Abstract: Storage fabrics have historically been the Achilles heels of virtual desktop infrastructures due to its low performance, complex implementation and excessive Total Cost Ownership. A number of different technologies and approaches have been implemented in the past with marginal successes.

Hyper-Convergence is a radical paradigm shift that empowers enterprises of any size to employ the same datacenter transformations that allowed companies like Google, Facebook and Ebay to achieve high performance and massive scales utilizing an efficient solution that can easily adapt to today’s dynamic business environment.

In this session you will learn:

  • The advantages of utilizing Hyper-Convergence in your VDI deployment;
  • How Hyper-Convergence will transform ITs role from simply “keeping the lights on” to a true business enabler;
  • The 5 main points you should pay attention before designing VDI for Hyper-Converged infrastructures;


Nutanix will be at Synergy at the show demonstrating the Nutanix Virtual Computing Platform and maybe even with a big surprise for XenDesktop administrators. Stay tuned!

Click here for Agenda and Registration


This article was first published by Andre Leibovici (@andreleibovici) at myvirtualcloud.net

Permanent link to this article: http://myvirtualcloud.net/?p=6131

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