Yellow Bricks

by Duncan Epping

Data Recovery

Unexplored Territory: recovering from a ransomware attack /w Sazzala Reddy!

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There we go, episode 002 of the Unexplored Territory Podcast was just published. In this episode we talk to Sazzala Reddy. Sazzala is a Chief Technologist at VMware who joined via the Datrium acquisition, where he was the CTO. Before founding Datrium, he was at Dell/EMC, where he came in via the DataDomain acquisition. I think it is fair to say that Sazzala has a heavy data/storage DNA. We discuss Sazzala’s career path, why better is sometimes worse, and we extensively discuss VCDR and the new cloud file system that is being developed. I think it is a very interesting episode and would encourage everyone to give it a listen!

Make sure to follow Sazzala on twitter (https://twitter.com/sazzala) and read his blog post on the VCDR filesystem: https://bit.ly/3CiQoav.

Listen now via Apple Podcasts: https://apple.co/2ZOziDx, Spotify: https://spoti.fi/3BEkFja, Google: https://bit.ly/3Cy3ssF, Overcast: https://overcast.fm/+zyG9k_hks, Website: https://bit.ly/3w70FnV.

Does vSAN Enhanced Durability work when you have a limited number of hosts?

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Last week I had a question about how vSAN Enhanced Durability works when you have a limited number of hosts. In this case, the customer had a 3+3+1 stretched cluster configuration, and they wondered what would happen when they would place a host into maintenance mode. Although I was pretty sure I knew what would happen, I figured I would test it in the lab anyway. Let’s start with a high-level diagram of what the environment looks like. Note I use a single VM as an example, just to keep the scenario easy to follow.

In the diagram, we see a virtual disk that is configured to be stretched across locations, and protected by RAID-1 within each location. As a result, you will have two RAID-1 trees each with two components and a witness, and of course, you would have a witness component in the witness location. Now the question is, what happens when you place esxi-host-1 into maintenance mode? In this scenario, vSAN Enhanced Durability will want to create a “durability component”. This durability component is used to commit all new write IO to. This will allow vSAN to resync fast after maintenance mode, and enhances durability as we would still have 2 copies of the (new) data.

However, in the scenario above we only have 3 hosts per location. The question then is, where is this delta component created then? As normally with maintenance mode you would need a 4th host to move data to. Well, it is simple, in this case, what vSAN does is it creates a “durability component” on the host where the witness resides, within the location of course. Let me show you in a diagram, as that makes it clear instantly.

By adding the Durability component next to the witness on esxi-host-3, vSAN enhances durability even in this stretched cluster situation, as it provides a local additional copy of new writes. Now, of course I tested this in my lab. So for those who prefer to see a demo, check out the youtube video below.

Startup intro: SaaS-based backup solution Clumio

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Last week I saw an update from one of the Clumio founders on twitter. It reminded me that I had promised to take a look at their product. This week I had a meeting set up with Clumio and we went over their product and how to configure it briefly. Clumio is a SaaS based backup solution that was founded in 2017 by former PernixData, Nutanix, EMC folks. The three founders are Poojan Kumar, Kaustubh Patil, and Woon Jung, and those three you may remember from PernixData. One thing to point out is that they had 3 rounds of funding (~190 million dollars) so far and they came out of stealth around VMworld 2019. Coincidentally they won the Gold award for Best of VMworld in the data protection category, and best of show for the entire show, not bad for a first VMworld. I guess that I have to point out that although I would classify them as backup/recovery today, they are adding new functionality weekly and “backup/recovery” is probably not a fair category, data protection is more appropriate and it would not surprise me if that evolves to data management and protection over time. If you are not a fan of reading, simply head over to my youtube video on Clumio, otherwise, just continue below.

So how does it work conceptually? Well they basically have a SaaS solution, but you will need to install an OVA (they call it a cloud connector) in your environment to connect to the SaaS platform for VMware on-premises and VMware Cloud on AWS. When you connect AWS EBS they use a cloud formation template. This cloud connector is a 4 vCPU/8GB virtual machine that then needs the ability to connect to “the outside world” of course. The Cloud Connector is stateless and requires no updates. You can run this Cloud Connector appliance in multiple clusters, on-prem, or in VMware Cloud on AWS and once they are registered you will see those data sources in your portal.  This is nice as you can see all your data sources across public and private clouds in one single pane of glass. You will have the ability to define “backup schemes” by creating policies. These policies can of course then be associated with objects. These objects can be VMs, Clusters and even vCenter Server instances. This means that if you assign a policy to vCenter Server that every new VM created will inherit the policy automatically. You may wonder, where is your data stored? Your data is stored in S3 buckets that are part of the Clumio SaaS-based platform. Customers are isolated from each other, they will have their own dedicated S3 buckets, and these buckets are created and maintained by Clumio, you as a customer only interact with Clumio! [Read more…] about Startup intro: SaaS-based backup solution Clumio

My recommended sessions for VMworld Europe 2019!

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I created a list of recommended sessions for VMworld US, so I figured I would do the same for VMworld Europe. I am limiting it to 15 sessions for Europe and removed some of the sessions I had listed for the US and added some others for EMEA. I personally have 2 sessions scheduled at the moment, and they filled up rather fast in the US, so make sure to register early: HCI1870BE and HBI2186BE.

Okay, here’s my top 15 list, please note that this is pretty much in random order:

  • 60 Minutes of Non-Uniform Memory Architecture [HBI2278BE] by Frank Denneman
    This session got raving reviews in the US, I attended it personally and I can highly recommend it. That is if you think your brain can handle it… it is deep!
  • PowerCLI Deep Dive [HBI1729BE] by Luc Dekens and Kyle Ruddy
    What can I say? These guys speak PowerCLI. They know it inside out, just make sure you are ready to go deep!
  • VMware Cloud Foundation Deep Dive [HBI2044BE] by Jason Shaw
    I am a big fan of full-stack HCI solutions, and in this session, Jason talks about what VMware Cloud Foundation brings to the table.
  • HCI Management: Current and Future [HCI1207BE] by JunChi Zhang and Christian Dickmann
    Every year these guys bring some really cool demos and they expect you to provide feedback at the end of the session. So if you want to have a chance to influence vSAN/vSphere, attend this one!
  • Project Pacific Technical Overview: Unifying vSphere and Kubernetes [HBI4500BE] by Michael West and Jared Rosoff
    There was a lot of buzz surrounding the announcement of Project Pacific. I managed to sit in one or two sessions in the US, and knowing Jared was the lead engineering on this project I suspect that this session may even go deeper than the ones I attended in the US.
  • The Virtually Speaking Podcast Live: The Future of Storage [HCI1894PE] by Pete Flecha, John Nicholson, and guests
    I was a guest on the US in this session, it was a lot of fun. A lively discussion, and great questions from the audience on top of that. Plus, it is amazing to see Pete Flecha do the intro and outro live, I always thought that was pre-recorded!
  • The Cloud Backbone Network: A Paradigm Shift in Corporate WAN [OCTO1911BE] by Israel Cidon
    I have seen a session on this topic by Israel at an internal conference and it was nothing short of mind-blowing. I would highly recommend attending this if you want to learn more about how we could potentially improve corporate WANs in the future by leveraging SD-WAN technology. Mind, this session is foreward looking!
  • Showcase Keynote: HCI – The Foundation for your Future-proof Infrastructure [HCI3551KE] by Cormac Hogan and John Gilmartin
    I presented this session in the US with John, Cormac will be presenting it in Europe with John. I am sure it will be filled with great demos once again, and I will definitely try to attend this one in person
  • Leveraging the Latest Server Technologies in vSphere [HBI2362BE] by Niels Hagoort
    This session wasn’t on my list for the US, but after watching the recording I feel it is worth attending in person! A good overview of what we are doing with the latest HW technologist in vSphere.
  • vSphere Virtual Volumes: Technical Deep Dive [HBI2853BE] by Jason Massae and Thiruvengada Govinda Thirumal
    The adoption of vVols is growing fast, and it is for a good reason. Jason and Thiruvengada will explain in-depth what vVols is and how it works, and of course what the benefits are of adopting it.
  • Tech Preview of Site Recovery Manager with Virtual Volumes [HCI2894BE] by Stefan Tsonev and Velina Krasteva
    The tech preview of SRM for vVols has been discussed various times, but in this session by Stefan and Velina it is also demonstrated. So if you are interested in disaster recovery solutions in combination with vVols then this is one to attend!
  • Meet the [ML] Driver of the Self-Driving Datacenter [MLA1904BE] by Jad El-Zein and Arun Annavarapu
    At VMworld US Project Magna was unveiled, VMware’s effort to deliver the self-driving datacenter. A very interesting concept, which is explained in this session by Jad and Arun. I’ve seen some of the work, and it has a lot of potential, highly recommend attending this session!
  • Technical Deep Dive on Cloud Native Storage 1.0 [HCI2763BE] by Cormac Hogan and Myles Gray
    Cormac and Myles are the Cloud Native experts in our business unit, and I can guarantee that this will be a great session filled with cool demos.
  • Optimizing vSAN for Performance [HCI1757BE] by Paudie ORiordan
    If anyone can explain how to optimize vSAN, how to do benchmarking, and what to avoid… it is Paudie. On top of that, he is a great speaker and you can basically ask him anything on the topic of storage. Must see!
  • Innovations in vMotion: Features, Performance, and Best Practices [HBI1421BE] by Sreekanth Setty and Arunachalam Ramanathan
    I watched this session in the US, it provides an excellent overview of the enhancements introduced for vMotion to improve vMotion (and switch over) times. They also talk about some enhancements coming in the near future. Very interesting stuff.

Scheduling opens up tomorrow (24th of September), so make sure to hit the portal early. I guarantee that many of the sessions above will be full in a matter of days. So don’t say I did not warn you in advance!

New book: VMware vSAN 6.7 U1 Deep Dive

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Cormac Hogan and I have been working late nights and weekends over the past months to update our vSAN book material. Thanks Cormac, it was once again a pleasure working with you on this project! As you may know, we released two versions of a vSAN based book through VMware Press. The book was titled vSAN Essentials. As mentioned before, after restructuring and rewriting a lot of the content we felt that the title of the book didn’t match the content, so we decided to rebrand it to vSAN 6.7 U1 Deep Dive. After receiving very thorough reviews by Frank Denneman and Pete Koehler (Thanks guys!) we managed to complete it this week after we added a great foreword by our business unit’s SVP and General Manager, Yanbing Li.

Cormac and I decided to take the self-publishing route for this book, which allows us to set a great price for the ebook and enable the Amazon matchbook option, giving everyone who buys the paper version through Amazon the option to buy the e-book with a nice discount! As prices will vary based on location I am only going to list the USD prices. Please check your local Amazon website for localized prices. Oh, and before I forget, I would like to recommend buying the ebook flavor! Why? Well:

“On average, each printed book releases 8.85 pounds of carbon dioxide into the environment. Together, the newspaper and book-printing industries cut down 125 million trees per year and emit 44 million tons of CO2.”

We appreciate all support, but we prefer the cleanest option from an environmental stance, this is also the reason we priced the ebook a lot cheaper than the paper version. Anyway, here are the links to the US store, we hope you enjoy the content, and of course as always an Amazon review would be appreciated! Interestingly, it seems we already reached number 1 in the category Virtualization and the category Storage before this announcement, thanks everyone, we really appreciate it! (Please note, as an Amazon Associate I earn from below qualifying purchases.)

 

UPDATE:

It appears that some Amazon stores take a bit longer to index the content, so listing all the different versions below for the different stores that sell it: