Yellow Bricks

by Duncan Epping

Data Recovery

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!

 

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:

VMworld Video: vSphere 6.7 Clustering Deep Dive

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As all videos are posted for VMworld (and nicely listed by William), I figured I would share the session Frank Denneman and I presented. It ended up in the Top 10 Sessions on Monday, which is always a great honor. We had a lot of positive feedback and comments, thanks for that! Most importantly, it was a lot of fun again to be up on stage at VMworld talking about this content after 6 years of absence or so. For those who missed it, watch it here:

Also very much enjoyed the book signing session at the Rubrik booth with Niels and Frank. I believe Rubrik gave away around 1000 copies of the book. Hoping we can repeat this huge success in EMEA. But more on that later. If you haven’t picked up the book yet and won’t be at VMworld Europe, consider picking it up through Amazon, e-book is 14.95 USD only.


VMworld – VMware vSAN Announcements: vSAN 6.7 U1 and beta announced!

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VMworld is the time for announcements, and of course for vSAN that is no different. This year we have 3 major announcements and they are the following:

  • VMware vSAN 6.7 U1
  • VMware vSAN Beta
  • VMware Cloud on AWS new features

So let’s look at each of these, first of all, VMware vSAN 6.7 U1. We are adding a bunch of new features, which I am sure you will appreciate. The first one is various VUM Updates, of which I feel the inclusion of Firmware Updates through VUM is the most significant one. For now, this is for the Dell HBA330 only, but soon other controllers will follow. On top of that there now also is support for custom ISO’s. VUM will recognize the vendor type and validate compliance and update accordingly when/if needed.

The other big thing we are adding os the “Cluster Quickstart wizard“. I have shown this at various sessions already, so some of you may be familiar with it. It basically is a single wizard that allows you to select the required services, add the hosts and configure the cluster. This includes the configuration of HA, DRS, vSAN and the network components needed to leverage these services. I recorded a quick demo that actually shows you what this looks like

One of the major features in my opinion that is introduced is UNMAP. Yes, unmap for vSAN. So as of 6.7 U1 we are now capable of unmapping blocks when the Guest OS sends an unmap/trim command. This is great as it will greatly enhance/improve space efficiency. Especially in environments where for instance large files or many files are deleted. You need to enable it, for now, through “rvc”. And you can do this as follows:

/localhost/VSAN-DC/computers/6.7 u1> vsan.unmap_support -e .

When you run the above command you should see the below response.

Unmap support is already disabled
6.7 u1: success
VMs need to be power cycled to apply the unmap setting
/localhost/VSAN-DC/computers/6.7 u1>

Pretty simple right? Does it really require the VM to be power cycled? Yes, it does, as during the power-on the Guest OS actually queries for the unmap capability, there’s no way for VMware to force that query without power cycling the VM unfortunately. So power it off, and power it on if you want to take advantage of unmap immediately.

There are a couple smaller enhancements that I wanted to sum up for those who have been waiting for it:

  • UI Option to change the “Object Repair Timer” value cluster-wide. This is the option which determines when vSAN starts repairing an object which has an absent component.
  • Mixed MTU support for vSAN Stretched Clusters (different MTU for Witness traffic then vSAN traffic)
  • Historical capacity reporting
  • VROps dashboards with vSAN stretched cluster awareness
  • Additional PowerCLI cmdlets
  • Enhanced support experience (Network diagnostic mode, specialized dashboards), you can find the below graphs under Monitor/vSAN/Support
  • Additional health checks (storage controllers firmware, unicast network performance test etc)

And last but not least, with vSAN Stretched we have the capability to protect data within a site. As of vSAN 6.7 U1 we also now have the ability to protect data within racks, it is however only available through an RPQ request. So if you need protection within a rack, contact GSS and file an RPQ.

Another announcement was around a vSAN Beta which is coming up. This vSAN Beta will have some great features, three though have been revealed:

  • Data Protection (Snapshot based)
  • File Services
  • Persistent Storage for Containers

I am not going to reveal anything about this, simply to avoid violating the NDA around this. Sign up for the Beta so you can find out more.

And then the last set of announcements was around functionality introduced for vSAN in VMware Cloud on AWS. Here there were two major announcements if you ask me. The first one is the ability to use Elastic Block Storage (EBS volumes) for vSAN. Meaning that in VMware Cloud on AWS you are no longer limited to the storage capacity physically available in the server, no you can now extend your cluster with capacity delivered through EBS. The second one is the availability of vSAN Encryption in VMware Cloud on AWS. This, from a security perspective, will be welcomed by many customers.

That was it, well… almost. This whole week many sessions will reveal various new potential features and futures. I aim to report on those when sitting in on those presentations, or potentially after VMworld.

 

22 / 23 May 2018 – VMware Technical Support Summit

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A while back I was asked if I could present at the VMware Technical Support Summit and last week I received the agenda. I forgot to blog about it so I figured I would share it with everyone. I was supposed to go to this event last year but I had a clash in my calendar unfortunately. At this event organized by our support team you will have the ability to sit in some extreme deep dive sessions. Below you can find the agenda, and also here’s the registration link if you are interested! Note that Joe Baguley will be doing a keynote, and Cormac Hogan and I will be doing a session on vSAN futures!

Happy 10th Birthday Yellow-Bricks.com

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Just wanted to share with all of you the fact that this week marks the 10th anniversary of Yellow-Bricks.com. Crazy thinking back about how it all started, and what it turned in to. Thanks everyone for taking the time to read and comment on many of the articles over the years. Those wondering what’s next, what to expect in the upcoming year? Well definitely an update to the vSAN Essentials book released yesterday, but also an update to probably one of the best sold VMware related books: