VMware Cloud Foundation

Part 2: Is VSA the future of Software Defined Storage? (Customer use case)

Duncan Epping · Nov 12, 2019 ·

About 6.5 years ago I wrote this blog post around the future of Software-Defined Storage and if the VSA (virtual storage appliance) is the future for it. Last week at VMworld a customer reminded me of this article. Not because they read the article and pointed me back at it, but because they implemented what I described in this post, almost to the letter.

This customer had an interesting implementation, which kind of resembles the diagram I added to the blog post, note I added a part to the diagram which I originally left out but had mentioned in the blog (yes that is why the diagram looks like it is ancient… it is):

I want to share with you what the customer is doing because there are still plenty of customers that do not realize that this is supported. Note that this is supported by both vSAN as well as VMware Cloud Foundation, providing you a future proof, scalable, and flexible full-stack HCI architecture which does not need to be implemented in a rip and replace approach!

This customer basically leverages almost all functionality of our Software-Defined Storage offering. They have vSAN with locally attached storage devices (all NVMe) for certain workloads. They have storage arrays with vVols enabled for particular workloads. They have a VAIO Filter Driver which they use for replication. They also heavily rely on our APIs for monitoring and reporting, and as you can imagine they are a big believer in Policy-Based Management, as that is what helps them with placing workloads on a particular type of storage.

Now you may ask yourself, why on earth would they have vSAN and vVols sitting next to each other? Well, they had a significant investment in storage already, the storage solution was fully vVols capable and when they started using vSAN for certain projects they simply fell in love with Storage Policy-Based Management and decided to get it enabled for their storage systems as well. Even though the plan is to go all-in on vSAN over time, the interesting part here, in my opinion, is the “openness” of the platform. Want to go all-in on vSAN? Go ahead! Want to have traditional storage next to HCI? Go ahead! Want to use software-based data services? Go ahead! You can mix and match, and it is fully supported.

Anyway, just wanted to share that bit, and figured it would also be fun to bring up this 6.5 years old article again. One more thing, I think it is also good to realize how long these transitions tend to take. If you would have asked me in 2013 when we would see customers using this approach my guess would have been 2-3 years. Almost 6.5 years later we are starting to see this being seriously looked at. Of course, platforms have to mature, but also customers have to get comfortable with the idea. Change simply takes a lot of time.

Joined GigaOm’s David S. Linthicum on a podcast about cloud, HCI and Edge.

Duncan Epping · Oct 14, 2019 ·

A while ago I had the pleasure to join David S. Linthicum from GigaOm on their Voices in Cloud Podcast. It is a 22 minute podcast where we discuss various VMware efforts in the cloud space, edge computing and of course HCI. You can find the episode here, where they also have the full transcript for those who prefer to read instead of listen to a guy with a Dutch accent. It was a fun experience for sure, I always enjoy joining podcast’s and talking tech… So if you run a podcast and are looking for a guest, don’t hesitate to reach out!

Of course you can also find Voices in Cloud on iTunes, Google Play, Spotify, Stitcher, and other platforms.

Can you move a vSAN Stretched Cluster to a different vCenter Server?

Duncan Epping · Sep 17, 2019 ·

I noticed a question today on one of our internal social platforms, the question was if you can move a vSAN Stretched Cluster to a different vCenter Server. I can be short, I tested it and the answer is yes! How do you do it? Well, we have a great KB that actually documents the process for a normal vSAN Cluster and the same applies to a stretched cluster. When you add the hosts to your new vCenter Server and into your newly created cluster it will pull in the fault domain details (stretched cluster configuration details) from the hosts itself, so when you go to the UI the Fault Domains will pop up again, as shown in the screenshot below.

What did I do? Well in short, but please use the KB for the exact steps:

Powered off all VMs
Placed the hosts into maintenance mode (do not forget about the Witness!)
Disconnected all hosts from the old vCenter Server, again, do not forget about the witness
Removed the hosts from the inventory
Connected the Witness to the new vCenter Server
Created a new Cluster object on the new vCenter Server
Added the stretched cluster hosts to the new cluster on the new vCenter Server
Took the Witness out of Maintenance Mode first
Took the other hosts out of maintenance

That was it, pretty straight forward. Of course, you will need to make sure you have the storage policies in both locations, and you will also need to do some extra work if you use a VDS. Nevertheless, it works pretty much straight-forward and as you would expect it to work!

VMworld Reveals: VMware Cloud Foundation (#HBI1432BUR)

Duncan Epping · Sep 11, 2019 ·

At VMworld, various cool new technologies were previewed. In this series of articles, I will write about some of those previewed technologies. Unfortunately, I can’t cover them all as there are simply too many. This article is about VMware Cloud Foundation, which was session HBI1432BUR. For those who want to see the session, you can find it here. This session was presented by Mark Chuang and Jayanta K Dey. Please note that this is a summary of a session which is discussing the technology direction of the products, the discussed features may never be released, and this direction does not represent a commitment of any kind, and is subject to change. Now let’s dive into it, what is happening in the VMware Cloud Foundation space?

Jayanta kicked off with an introduction, and I believe most of you understand why we need to simplify IT, and if not, it is all about optimizing cost and improving speed/agility/time to market. This can only be achieved when you have a platform that caters for this, or basically a platform that enables you to focus on delivering services which are valuable to the business instead of focussing on the underlying infrastructure. This is where VMware Cloud Foundation comes in to play. It is a consistent and prescriptive full-stack hyperconverged infrastructure which can run any application.

VMworld Reveals: HCI Present and Futures (#HCI2733BU)

Duncan Epping · Sep 5, 2019 ·

At VMworld, various cool new technologies were previewed. In this series of articles, I will write about some of those previewed technologies. Unfortunately, I can’t cover them all as there are simply too many. This article is about HCI / vSAN futures, which was session HCI2733BU. For those who want to see the session, you can find it here. This session was presented by Srinivasan Murari and Vijay Ramachandran. Please note that this is a summary of a session which is discussing the roadmap of VMware’s HCI offering, these features may never be released, and this preview does not represent a commitment of any kind, and this feature (or it’s functionality) is subject to change. Now let’s dive into it, what is VMware planning for the future of HCI? Some of the features discussed during this session were also discussed last year, I wrote a summary here for those interested.

Vijay kicked off the session with an overview of the current state of HCI and more specifically VMware vSAN and Cloud Foundation. Some of the use cases were discussed, and it was clear that today the majority of VMware HCI solutions are running business-critical apps on top. More and more customers are looking to adopt full stack HCI as they need an end-to-end story that includes compute, networking, storage, security and business continuity for all applications running on top of it. As such VMware’s HCI solution has been focussed on lifecycle management and automation of all aspects of the SDDC. This is also the reason why VMware is currently the market leader in this space with over 20k customers and a market share of over 41%.