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by Duncan Epping

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vSAN

What’s new for vSAN 7.0 U1!?

Duncan Epping · Sep 15, 2020 ·

Every 6-9 months VMware has been pushing out a new feature release of vSAN. After vSphere and vSAN 7.0, which introduced vSphere Lifecycle Manager and vSAN File Services, it is now time to share with you what is new for vSAN 7.0 U1. Again it is a feature-packed release, with many “smaller enhancements, but also the introduction of some bigger functionality. Let’s just list the key features that have just been announced, and then discuss each of these individually. You better sit down, as this is going to be a long post. Oh, and note, this is an announcement, not the actual availability of vSAN 7.0 U1, for that you will have to wait some time.

  • vSAN HCI Mesh
  • vSAN Data Persistence Platform
  • vSAN Direct Configuration
  • vSAN File Services – SMB support
  • vSAN File Services – Performance enhancements
  • vSAN File Services – Scalability enhancements
  • vSAN Shared Witness
  • Compression-only
  • Data-in-transit encryption
  • Secure wipe
  • vSAN IO Insight
  • Effective capacity enhancements
  • Enhanced availability during maintenance mode
  • Faster host restarts
  • Enhanced pre-check for vSAN maintenance mode
  • Ability to override default gateway through the UI
  • vLCM support for Lenovo

[Read more…] about What’s new for vSAN 7.0 U1!?

Host in vSAN cluster with 0 components while other hosts are almost full?

Duncan Epping · Sep 3, 2020 ·

Internally someone just bumped into an issue where a single host in a cluster wasn’t storing any of the created vSAN Components / Objects. It was to the point where every single host in the cluster was close to the maximum of 9000 components, but that one host had 0 components. After some quick back and forth the following message stood out in the UI:

vSAN node decommission state

What does this mean? Well basically it means that from a vSAN stance this host is in maintenance mode. For whatever reason, the host itself from a hypervisor stance was not in maintenance mode, which means that the two were not in sync. This can simply be resolved by SSH’ing into the respective host and running the following command:

localcli vsan maintenancemode cancel

One thing to consider of course is to trigger a rebalance of the cluster after taking the host out of the decommissioned state when the environment is 6.7 U2 or lower, as that would result in a more equally balanced environment. Starting with  6.7 U3 this process is initiated automatically, when configured. There is a KB that describes how to trigger, and/or configure, to be found here.

Top 15 VMworld 2020 sessions to attend

Duncan Epping · Aug 17, 2020 ·

VMworld 2020 is coming, which means I get to create a list of sessions again which I feel are worth attending. My focus will primarily be on sessions that are hosted by folks of the VMware Cloud Platform Business Unit, which means that the list will be dominated by sessions on the topic of vSAN, vSphere, VCF etc. The key reason for it being of course is that I know most of the speakers on those sessions, and I have attended many of those sessions in the past, so I know what to expect.

I have two sessions accepted this year. The two sessions are:

  • vSAN 7.0: A Platform for both Virtual Machine and Containerized Workloads [HCI1814] – Duncan Epping & Cormac Hogan
  • Change Begins at the End of Your Comfort Zone: My Take 3 Journey [ETPD1043] – Duncan Epping

Make sure to attend these sessions, and if you have any questions, feel free to drop me a note on twitter! When it comes to my top 15 sessions, please note that these are in random order, and also note that if your (or a) session is not listed it doesn’t mean I feel your session isn’t going to be great, it simply means I had too many great sessions to pick from and I somehow had to limit the list. Here we go:

  1. Fast Forward to Future-Ready Infrastructure [HCI3074] by John Gilmartin
    In this BU showcase, John Gilmartin will be discussing where HCI stands today, but more importantly, which direction we are heading towards!
  2. 60 Minutes of NUMA [HCP2453] by Frank Denneman
    Do you want to know everything you ever need to know about NUMA when it comes to vSphere? Make sure to watch this session, it was an instant classic last year, and I am sure it will be again this year!
  3. Storage and Availability Vision [HCP3073] by Vijay Ramachandran and Jayanta Dey
    This is the session where futures are discussed! Vijay and Jayanta will be sharing with you which concepts and functionality VMware is exploring for future releases of our HCI products. Definitely worth attending if you want to get a hint of our roadmap.
  4. The Datacenter of the Future [HCP3004] by Kit Colbert and Pere Monclus
    In this session Kit and Pere are going to discuss the future of the Datacenter. Both Kit and Pere are a CTO for the business unit they work for, so you can expect this session to be forward-looking and discuss the trends VMware is seeing and technologies they expect to become mainstream in the upcoming years.
  5. Datrium-based DRaaS Deep Dive: The What, Why, How of the new VMware DRaaS [HCI2886] by Nabil Quadri and Sazzala Reddy
    As most of you know, VMware recently acquired Datrium. In this session, Nabil and Sazzala are going to dive deep into what their DR as a Service solution brings, how it works, and why you should be watching this space closely!
  6. Extreme Performance Series: vSphere Compute and Memory Schedulers [HCP2583] by Xunjia Lu and Qasim Ali
    I always try to watch 2 or 3 sessions in the Extreme Performance Series, these sessions are always very educational. I have learned something new every single time I’ve attended, or watched, one of these. Do note, this is a deep (as in DEEP) dive typically.
  7. vSAN Technical Deep Dive [HCI1069] by Rakesh Radhakrishnan and Matt Amdur
    Technical deep dives host by engineering and product management are always worth attending in my eyes, and both Rakesh and Matt will for sure deliver what you would expect a deep dive to be.
  8. vSphere Virtual Volumes (vVols): Modernize Your External Storage [HCI1692] by Cody Hosterman and Jason Massae
    If I had to pick two people to tell me all about vVols it would probably be Cody and Jason, these guys understand core storage and vVols inside out, and on top of that understand very well how, and why, customers are implementing it!
  9. The Future of Networking with VMware NSX [VCNC1555] by Bruce Davie and Marcos Hernandez
    A lot has changed in the world of networking the past decade or so, and with IoT and 5G around the corner, it is important to understand how VMware can help you moving into this new era.
  10. vCenter Server 7 Deconstructed [HCP2328] by Emad Younis and Niels Hagoort
    In this session Emad and Niels will be discussing the internals of vCenter Server. How did VMware integrate the Kubernetes effort? How does Lifecycle Manager help you manage your cluster?
  11. HCI Management: Current and Future [HCI1514] by Junchi Zhang
    In this session Junchi will be discussing the future of HCI management. In the last couple of years, this session has always been packed with demos of future functionality, and it has been my favorite the past couple of years for sure!
  12. What’s New in Site Recovery Manager and vSphere Replication [HCI1452] by Cato Grace and Velina Krasteva
    A lot has changed for Site Recovery Manager in the past year, definitely worth getting a better understanding by watching this session!
  13. Deep Dive: Storage for VMware Cloud Foundation [HCI2362] by Kevin Tebear and Ron Scott-Adams
    The question of which storage platform to use with VCF comes up frequently, and in this session Kevin and Ron are going to discuss all the supported protocols and architectures, and they will be providing guidance and best practices around what to use and when/where.
  14. Innovations in vSphere 7 vMotion: Architecture and Performance [HCP1508] by Sreekanth Setty and Yanlei Zhao
    I watched this session last year, and it was very interesting, a lot of in-depth info around the changes introduced and the changes that will be introduced in the future, to further improve the vMotion process!
  15. Inside xLabs and Off-Roadmap Innovation in the VMware Office of the CTO [OCTO2406] by Daniel Beveridge and Chris Wolf
    In the past couple of years Daniel and Chris have been hosting some very interesting sessions, some very fascinating ideas, concepts, and trends were shared, along with potential solutions for these.

VCG Notification demo and Changing the Default vSAN Policy Demo

Duncan Epping · Jun 22, 2020 ·

I created two youtube video last week which I just wanted to share with everyone. In these demo’s I am showing the new VCG Notification option. The VCG Notification option is very useful for customers who want to be notified via email when a change to a component of a ready node configuration has occurred. This could be a change in support, change of driver / firmware etc.

Another demo that I recorded was around how to change the default policy for a vSAN Cluster. This seems to be an option that many folks haven’t been able to find in the UI. It is pretty straight forward, hence I am sharing it here.

 

Inspecting vSAN File Services share objects

Duncan Epping · Apr 28, 2020 ·

Today I was looking at vSAN File Services a bit more and I had some challenges figuring out the details on the objects associated with a File Share. Somehow I had never noticed this, but fortunately, Cormac pointed it out. In the Virtual Objects section of the UI you have the ability to filter, and it now includes the option to filter for objects associated to File Shares and to Persistent Volumes for containers as well. If you click on the different categories in the top right you will only see those specific objects, which is what the screenshot below points out.

Something really simple, but useful to know. I created a quick youtube video going over it for those who prefer to see it “in action”. Note that at the end of the demo I also show how you can inspect the object using RVC, although it is not a tool I would recommend for most users, it is interesting to see that RVC does identify the object as “VDFS”.

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About the Author

Duncan Epping is a Chief Technologist and Distinguished Engineering Architect at Broadcom. Besides writing on Yellow-Bricks, Duncan is the co-author of the vSAN Deep Dive and the vSphere Clustering Deep Dive book series. Duncan is also the host of the Unexplored Territory Podcast.

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