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Benchmarks – Keeping Perspective

As a performance guy, my world is full of benchmarks – both good and bad.  I wanted to share my perspective of them, as they often seem to make people crazy.

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VMware Virtual SAN Interoperability: vCloud Automation Center

VSAN-vCACFor the second article of the Virtual SAN interoperability series, I showcase the interoperability between Virtual SAN and vCloud Automation Center. This demonstration presents one of the many ways in which vCloud Automation Center can be used to provision virtual machines onto a Virtual SAN infrastructure via a service catalog.

In this scenario, I have created and published three vCloud Automation Center blueprints to a service catalog. All blueprints are accessible to all users in a private cloud. Each blueprint was created based on virtual machine templates that are configured with a VM Storage Policy which was assigned at the vSphere level.

A VM Storage Policy is a vSphere construct that store storage capabilities in order to apply them onto virtual machines or different VMDKs. In this case the capabilities are based on capacity, availability, and performance which the offerings of Virtual SAN. In the demonstration, the focus is around deploying a virtual machine with the highest level of availability. Virtual machine or VMDKs availability configurations are defined by the “Number of Failures to Tolerate” storage capability. The service catalog contains 3 different virtual machine offerings each with a different “Number of Failures to Tolerate” policy as defined below:

  • Default Availability FTT=1
  • Medium Availability FTT=2
  • High Availability FTT=3

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Virtual SAN: New Product Walkthrough Demos

VSANIn effort to continue to providing information about Virtual SAN and its capability via recoded demos I’ve created a new set of Virtual SAN walkthrough demos .
The walkthrough demos are available and accessible online, for everyone that is interested in learning about how Virtual SAN works, its capabilities and how does it interoperate with other VMware products and solutions. To access the Virtual SAN walkthrough demos use the link below:

For more walkthrough demos continue to check the site as I will be updating the walkthrough demo catalog frequently.

- Enjoy

For future updates, be sure to following me on Twitter: @PunchingClouds


How to Supercharge your Virtual SAN Cluster (2 Million IOPS!!!)

2 Million IOps!So by now most of you are aware that Virtual SAN 5.5 was released last week, and it came in with a bang. During the launch event, we announced some impressive performance numbers, detailing 2 Million IOPS achieved in a 32-node Virtual SAN cluster. One of the most frequent questions since the launch has been what are the details of the configuration we used to achieve this monumental task. Well wait no longer, this is the post that will reveal the details in all their magnificent glory! Continue reading

Deploying Large Virtual SAN Clusters in Minutes

VSANThe deployment and configuration of Virtual SAN has been deemed “radically simple” because of its simplistic two click configuration capability. For the most part, most people have yet to see what the deployment and configuration of a large Virtual SAN cluster looks like and in actuality what it takes. Virtual SAN requires the configurations of dedicated virtual network interfaces as well as configuration to physical uplinks.

Configuring large clusters could potentially become time consuming and susceptible to configuration errors when done manually. In the interest of Virtual SAN interoperability and deep integration with the rest of the vSphere platform and its features the use of the vSphere Distributed Switches complement the overall ease of the configuration and deployment of Virtual SAN.

The vSphere Distributed Switches configuration “Template Mode” feature can be leverage to improve the agility of the virtual network configuration and also drastically reduce the risk of virtual network mis-configurations. This demonstrations showcase the deployment and configuration of a Virtual SAN along with its requires network configuration. For those who were not aware, the vSphere Distributed Switch is included as part of the Virtual SAN licensing.

Watch how simple and easy configure and deploy and 16 node Virtual SAN cluster with a vSphere Distributed Switch in a few minutes.

- Enjoy

For future updates, be sure to following me on Twitter: @PunchingClouds

vSphere Distributed Switch, Traffic Filtering

When talking with customers about our vSphere Distributed Switch I often find that they don’t know about a feature in the Traffic Filtering policy engine that allows for creation of Access Control Lists or ACLs. This is in additional to being able to tag traffic and pass Quality of Service (QoS) or Differentiated services Code Point (DSCP) values up to the physical network for prioritization.

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VMware Virtual SAN: Cross Cluster Migrations

VSANI was recently involved in a conversations with regards to Virtual SAN and virtual machine migration capabilities. A few customers have been wondering about whether or not all of the vSphere migration operation and functions work with Virtual SAN due to the way the system works. One particular migration operation in question was around the ability to migrate virtual machines.

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vSphere HA VM Monitoring – Back to Basics

In my experience as a customer, partner and working for VMware, I’ve found HA VM monitoring to be an incredibly helpful feature that I am consistently surprised is not used more. It is easy to turn on, provides an additional layer of protection for your VMs and just works. So why don’t more people use it? I am not going to be able to answer that question in this post, though I hope to provide enough information to get more people to try it out. Continue reading

PVSCSI and Large IO’s

Here’s a behavior that a few people have questioned me about recently:

Why is PVSCSI splitting my large guest operating system IO’s into smaller blocks?

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Backing up VMs on VSAN with VDP Advanced and Data Domain

As I am sure most of you are aware, VMware Virtual SAN (VSAN) is now generally available with vSphere 5.5 U1. Perhaps you have been using VSAN since its beta debut last year or maybe you are just getting started. Either way, the next logical question once VSAN has been deployed is how do I back up the VMs running on VSAN? To address that question, VMware has also released vSphere Data Protection (VDP) Advanced 5.5.6. One of the main features added to this VDP Advanced release is full support for backing up and restoring VMs running in a VSAN cluster.


It is certainly possible to deploy a VDP Advanced appliance to a VSAN cluster and back up VMs running on VSAN. However, this breaks the cardinal rule of not having your production data and backup data on the same storage. How can we address that? Keep reading…

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