vSAN 3 Node Data Resiliency

vSAN 3 Node Data Resiliency

I've received a few requests from the field recently regarding FUD being spread by a competitor about how vSAN handles resiliency of data for 3 node clusters so I thought I'd write about it just to clear the air a bit.Note: We will be referencing the resiliency policy FTT=1 vs RF2 in the rest of this post. Each of these methods keep two copies of data within a cluster.So the statement (or lie as most folks call it) that has been going around is this "Our resiliency is better with only three nodes so you don't need…

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A New Chapter Begins!

I am happy to announce that I'll be joining the Office of the CTO in the Storage and Availability group at VMware. That's right! I have landed my dream job.On day 1 I'm flying out to Palo Alto to meet with my new boss, Christos Karamanolis, and the extended team in Product Management, Marketing, Tech Marketing, Engineering and many others I'll be working with on a daily basis. As part of my role I will get to work with all of these folks to help shape where our storage and availability products are headed in the future. I can't…

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SimpliVity: A New Paradigm for VDI Implementations

I need to start this post of with a disclaimer: The OmniCube was developed to run all workloads in the data center. VDI is just another workload that will run on the OmniCube. Brief History In the past VMware and Citrix have released a number of features to help improve the performance and ROI of VDI deployments.  One of those features is the ability to use linked clones.  One of the primary features of linked clones was designed to allow you to save disk capacity on one of the most expensive resources of your deployment.  For VMware View we would…

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WTF!? - Powering on a virtual machine fails with the error: A general system error occurred

This can by far be one of the most frustrating error messages you will run across in a vSphere environment.  I was at a customer site yesterday and the customer ran across it while I was working through some other things.  He asked if I could fix it for him.  :) I immedieatly dove into the issue and started looking at the problem he was having and the error message was very generalized in nature.  "Powering on a virtual machine fails with the error: A general system error occurred"  I wasn't able to change any settings on the VM…

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The Cloud Orchestration Layer is Changing

With the recent purchases of a couple key companies within the cloud orchestration space I felt it was time to write about it.  The companies I am referring to are Cloupia, who was purchased by Cisco in December and Dynamic Ops, who was purchased by VMware in July.  In my opinion these companies had such a huge head start on where both of their parents were at the orchestration/cloud layer that there really wasn't a way for the parents to catch up without the purchases.  Thankfully they picked some bright stars to buy. We know that both Cloupia and…

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vSphere Replication and SRM Implementation Notes

I went through a vSphere Replication and Site Recovery Manager implementation this week and overall it went very well.  There are a few things that aren't really noted in the documentation that I wanted to get out there just in case anyone else runs into the speed bumps I did this week.  While I've implemented SRM with array based replication many times, this was my first go with vSphere Replication.   First, and most important, is to use the FQDN throughout the entire implementation of SRM, VRMS, and VRS.  While we used the FQDN for the vCenter server when we installed…

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Kemp Loadmaster: The Best Load Balancer You've Never Heard Of

I was contacted recently and asked to check out the latest virtual load balancer by Kemp Technologies and I have to say for the size of the package it sure packs some punch! The load balancer has all the features and functionality of the large scale "enterprise class" load balancers you've heard of but comes in an extremely small (30 MB) package.  It only requires 1GB of RAM so it is extremely efficient on system resources as well.  The architecture is what you would normally see in this type of solution, but for any noobs out there here…

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VCP 5 Study Guide Review

Fellow vExpert Brian Atkinson asked me to review his latest book VCP5 VMware Certified Professional on vSphere 5 Study Guide and I'm glad I agreed to do so.  What a great resource for future VCP 5 test takers to have available to them!  I wish I had had it when I was studying for my test a few months ago.  I highly recommend anyone planning to take exam VCP-510 to buy this book. Link to the book on Amazon is here: link It already has a couple 5 star reviews so I am not the only person impressed.  And don't…

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