Tag: vSphere Page 1 of 2

Changing advanced vSphere FT related settings, is that supported?

Advertise here with BSA

This week I received a question around changing the values for vSphere FT related advanced settings. This customer is working on an environment where uptime is key. Of course the application layer is one side, but …

Using a vSphere custom TCP/IP Stack for iSCSI

Advertise here with BSA

I noticed a question today on an internal slack channel and it was about the use of custom TCP/IP stacks for iSCSI storage environments. Cormac and I updated a bunch of Core Storage whitepapers recently, and …

vSAN Adaptive Resync, what does it do?

Advertise here with BSA

I am starting to get some more questions about vSAN Adaptive Resync lately. This was introduced a while back, but is also available in the latest versions of vSAN through vSphere 6.5 Patch 02. As a …

Contribute to VMTN Challenge Lab Communities to Win an Amazon Echo

VMware Hands-on Labs and VMware Technology Network have partnered to create a new learning resource: the VMTN Challenge Lab Communities.

What are the VMTN Challenge Lab Communities? These are six new communities based on the six Hands-on Labs …

Insufficient configured resources to satisfy the desired vSphere HA failover level

Advertise here with BSA

I was going over some of the VMTN threads and I noticed an issue brought up with Admission Control a while ago. Completely forgot about it until it was brought up again internally. With vSphere 6.5 …

Isolation Address in a 2-node direct connect vSAN environment?

Advertise here with BSA

As most of you know by now, when vSAN is enabled vSphere HA uses the vSAN network for heartbeating. I recently wrote an article about the isolation address and relationship with heartbeat datastores. In the …

vSphere HA heartbeat datastores, the isolation address and vSAN

Advertise here with BSA

I’ve written about vSAN and vSphere HA various times, but I don’t think this has been explicitly called out before. Cormac and I were doing some tests this week and noticed something. When we were looking …

vSphere and iSCSI storage best practices

Advertise here with BSA

And here’s the next paper I updated. This time it is the iSCSI storage best practices for vSphere. It seems that we have now overhauled most of the core storage white papers. You can find them …

New whitepaper available: vSphere Metro Storage Cluster Recommended Practices (6.5 update)

Advertise here with BSA

I had many requests for an updated version of this paper, so the past couple of weeks I have been working hard. The paper was outdated as it was last updated around the vSphere 6.0 timeframe, …

New white paper available: vSphere APIs for I/O Filtering (VAIO)

Advertise here with BSA

Over the past couple of weeks Cormac Hogan and I have been updating various Core Storage white papers which had not been touched in a while for different reasons. We were starting to see more and …

The difference between an isolation and a partition with vSphere

Advertise here with BSA

I have a lot of discussions with customers on the topic of stretched clusters, but also regular vSphere clusters. Something that often comes up is the discussion around what happens in an isolation or partition scenario. …

Which disk controller to use for vSAN

Advertise here with BSA

I have many customers going through the plan and design phase for implementing a vSAN based infrastructure. Many of them have conversations with OEMs and this typically results in a set of recommendations in terms of …

VMworld vSAN Sessions Playlist

Advertise here with BSA

I just created a simple playlist up on youtube which has most (if not all) vSAN sessions on there. If you are interested in vSAN simply have a look at the playlist and pick what you …

Sharing the “Top 10 things to know about vSAN” slides…

Advertise here with BSA

I was asked by a few people to share the slides for our Top 10 vSAN session at VMworld. Instead of sending the slides around via email I figured I would simply throw it up on …

Watch VMworld session “Top 10 Things to Know about vSAN #STO1264BE” for free …

Advertise here with BSA

I didn’t know, but apparently our session was a featured session at VMworld Europe. For those interested in our VMworld: Top 10 vSAN session there’s a “mini player” below of our European VMworld session. I somehow …

List all “thick” swap files on vSAN

Advertise here with BSA

As some may know, on vSAN by default the swap file is a fully reserved file. This means that if you have a VM with 8GB of memory, vSAN will reserve 16GB capacity in total for …

#STO1490BU : vSAN Vision – The Future of HCI

Advertise here with BSA

I am not able to attend many sessions, but wanted to add this one to my schedule. This session was hosted by Lee Caswell (VP Products Storage and Availability VMware), Christos Karamanolis (CTO Storage and Availability …

Don’t know why DRS is not balancing your cluster? DRS Dump Insight!

Advertise here with BSA

I was just reading up and noticed the DRS Dump Insight solution. It is a SaaS based DRS Dump Analyzer which gives you details around why your cluster is not balanced, or why certain recommendations are …

vSAN 6.6.1 Performance Diagnostics Demo

Advertise here with BSA

I was playing in my lab this morning and figured I would record a demo of a new feature which is part of vSAN 6.6.1. The Performance Diagnostics feature is aimed to help those running benchmarks …

Can you use the management IPs as the isolation address for HA?

Advertise here with BSA

There was a question on VMTN this week about the use of the management IP’s in a “smaller” cluster as the isolation address for vSphere HA. The plan was to disable the default isolation address (default …

Unbalanced Stretched vSAN Cluster

Advertise here with BSA

I had this question a couple of times the past month so I figured I would write a quick post. The question that was asked is: Can I have an unbalanced stretched cluster? In other words: …

VMkernel Observations (VOBs)

Advertise here with BSA

I never really looked at VOBs but as this came up last week during a customer meeting I decided to look in to it a bit. I hadn’t realized there was such a large number of …

vSAN 6.6 Stretched Cluster Demo

Advertise here with BSA

I had one more demo to finish and share and that is the vSAN 6.6 stretched cluster demo. I already did a stretched clustering demo when we initially released it, but with the enhanced functionality around …

vSAN 6.6 Demo: Configuration Assist

Advertise here with BSA

I just noticed I still had a demo recoding on my desktop from a couple of weeks ago. The topic is vSAN 6.6 configuration assist. Hadn’t done anything with it, so I just added the narratives …

Change multicast address when running multiple vSAN clusters in same VLAN

Advertise here with BSA

Before vSAN 6.6 we would always recommend to change the multicast address when running multiple vSAN clusters in the same VLAN. Now that with vSAN 6.6 we removed multicast, does this best practice/recommendation still apply? I …

vSAN 6.6: Manual vs Automatic Disk Claim Mode

Advertise here with BSA

I received this question on Manual vs Automatic disk claim mode in vSAN 6.6. Someone upgraded a cluster from 6.2 to 6.6 and  wanted to add a second cluster. They noticed that during the creation of …

Can I front vSAN with a VAIO Caching Solution?

Advertise here with BSA

I had this question a couple of times already, so I figured I would write a quick post. In short: yes you can put a VAIO Filter in front of vSAN. The question really is, which …

Where’s the HA enforce VM-Host and Affinity rules option in vSphere 6.5?

Advertise here with BSA

Last week on (VMware internal) Socialcast someone asked where the UI option is in vSphere 6.5 that allows you to enable the ability for vSphere HA to respect VM-Host Affinity and VM-VM Anti Affinity rules. In …

Disk format change going from 6.x to vSAN 6.6?

Advertise here with BSA

Internally I received a comment around the upgrade to 6.6 and the disk format version change. When you upgrade to 6.6 also the version of  disk changes, it goes to version 5. In the past with …

Where to find the Host Client vSAN section?

Advertise here with BSA

I had a couple of people asking already, so I figured I would do a short post on where to find the ESXi Host Client vSAN section. It is fairly straight forward, if you know where …

VMware vSAN 6.6 demo: vSAN Encryption

Advertise here with BSA

Yesterday I posted a quick video overview of a couple new features that are part of vSAN 6.6. (haven’t seen it, go watch that one first!) I mentioned in that demo that I would potentially …

What’s new for vSAN 6.6?

Advertise here with BSA

Yes this may confuse you a bit, a new vSAN release namely vSAN 6.6 but it doesn’t coincide with a vSphere release. That is right, this is a “patch” release for vSphere but a major version …

VM showing that HA failure response is disabled in 6.5?

Advertise here with BSA

I had a customer asking me today why on each VM it was showing that all HA responses are disabled. This customer is running vSphere 6.5 and below you can see what the UI showed. Note …

HA disabled VMs not registered on other hosts after failure?

Advertise here with BSA

A couple of weeks ago one of our SEs asked me about vSphere HA functionality that was introduced a while ago, which is the ability to have HA disabled VMs being registered on other healthy hosts …

Intel Optane support for vSAN, first HCI solution to deliver it

Advertise here with BSA

I am in Australia this week for the Sydney and Melbourne VMUG UserCon’s. Had a bunch of meetings yesterday and this morning the news was dropped that Intel Optane support was released for vSAN. The performance …

Running a Witness Appliance on a 2 Node vSAN config with FT

Advertise here with BSA

I have had various people asking, and to me it felt like an obvious answer, but as multiple have asked over the past couple of month I figured I would dedicate a post to it. The …

Startup intro: Runecast

Advertise here with BSA

I met with Runecast a couple of years ago at VMworld. Actually, I am not sure they already had a name back then, I should probably say I met with the guys who ended up founding …

vSAN 6.x customer? vSphere 6.0 Update 3 is out

Advertise here with BSA

Are you a vSAN 6.x customer? vSphere 6.0 Update 3 is out! There are a bunch of important fixes and improvements (checksumming performance for instance) in Update 3, so I would highly recommend looking in to …

Virtually Speaking Podcast – vSAN Customer Use Cases

Advertise here with BSA

As John Nicholson was traveling in and around New Zealand I was asked by Pete if I could co-host the Virtually Speaking Podcast again. It is always entertaining to join, Pete is such a natural when …

VVols design and procurement considerations

Advertise here with BSA

Over the past couple of months I have had more and more discussions with customers and partners about VVols. It seems that Policy Based Management and the VVol granular capabilities are really starting to sink in, …

XenDesktop/XenApp 7.12 MCS works with vSAN

Advertise here with BSA

This is something that has kept me busy for a while. For the past 2 years there were some challenges with regards to the use of MCS and XenDesktop/XenApp in combination with vSAN. In fact, Citrix …

Two host stretched vSAN cluster with Standard license?

Advertise here with BSA

I was asked today if it was possible to create a 2 host stretched cluster using a vSAN Standard license or a ROBO Standard license. First of all, from a licensing point of view the EULA

How to disable DRS for a single host in the cluster

Advertise here with BSA

I saw a question today which was interesting, how do I disable DRS for a single host in the cluster? I thought about it, and you cannot do this within the UI, at least… there is …

Can you run all-flash with vSAN 6.2 Standard license?

Advertise here with BSA

As I get the following question a lot I figured I would share the answer here as well: Can you run all-flash with vSAN 6.2 Standard license? Many of you have seen the change in licensing …

VMs not getting killed after vMSC partition has lifted

Advertise here with BSA

I was talking to a VMware partner over the past couple of weeks about challenges they had in a new vSphere Metro Storage Cluster (vMSC) environment. In their particular case they simulated a site partition. During …

Disk controllers for vSAN with or without cache?

Advertise here with BSA

I got this question today and I thought I already wrote something on the topic, but as I cannot find anything I figured I would write up something quick. The question was if a disk controller …

Storage capacity for swap files and TPS disabled

Advertise here with BSA

A while ago (2014) I wrote an article on TPS being disabled by default in future release. (Read KB 2080735 and 2097593 for more info) I described why VMware made this change from a security perspective …

All-Flash HCI is taking over fast…

Advertise here with BSA

Two weeks ago I tweeted about All-Flash HCI taking over fast, maybe I should have said All-Flash vSAN as I am not sure every vendor is seeing the same trend. Reason for it being of course …

The difference between VM Encryption in vSphere 6.5 and vSAN encryption

Advertise here with BSA

More and more people are starting to ask me what the difference is between VMCrypt aka VM Encryption and the beta feature we announced not to long ago called vSAN Encryption. (Note, we announced a beta, …

vSphere 6.5 what’s new – Storage IO Control

Advertise here with BSA

There are many enhancements in vSphere 6.5, an overhaul of Storage IO Control is one of them. In vSphere 6.5 Storage IO Control has been reimplemented by leveraging the VAIO framework. For those who don’t know …

vSphere 6.5 what’s new – HA

Advertise here with BSA

Here we go, one of my favourite features in vSphere… What’s new for HA in vSphere 6.5. To be honest, a lot! Many new features have been introduced, and although it took a while, I am …

vSphere 6.5 what’s new – DRS

Advertise here with BSA

Most of us have been using DRS for the longest time. To be honest, not much has changed over the past years, sure there were some tweaks and minor changes but nothing huge. In 6.5 however …

What is new for Virtual SAN 6.5?

Advertise here with BSA

As most of you have seen by the explosion of tweets, Virtual SAN 6.5 was just announced. Some may wonder how 6.5 can be announced so fast after the Beta Announcement, well this is not …

vSphere 6.5 what’s new – VMFS 6 / Core Storage

Advertise here with BSA

I haven’t spend a lot of time looking at VMFS lately. I was looking in to what was new for vSphere 6.5 and then noticed a VMFS section. Good to see there is still being worked …

Hyper-Converged is here, but what is next?

Advertise here with BSA

Last week I was talking to a customer and they posed some interesting questions. What excites me in IT (why I work for VMware) and what is next for hyper-converged? I thought they were interesting questions …

Want to watch a VMworld 2016 session?

Advertise here with BSA

I had a long discussion with the VMworld team about this the past editions and I am happy to say that ALL sessions have been made available to the public straight after the event. VMware made …

#STO7904 VSAN Management Current and Futures by @cdickmann

Advertise here with BSA

Christian Dickmann (VSAN Development Architect) talking about VSAN Management futures in this session, first of all a big fat disclaimer, all of these features may or may not ever make it in to a release and

VMworld 2016 U.S. – vExpert Sessions

vmworld2016

It’s almost VMworld time and this year we are back in Las Vegas. Each year we gather the sessions being presented by the VMware vExperts. The …

Disk format version 4.0 update to 2.0 suggested

Advertise here with BSA

I’ve seen some people reporting a strange message in the Virtual SAN UI. The UI states the following: Disk format version 4.0 (update to 2.0 suggested). This is what that looks like (stole the pic from …

Getting a 404 error with the Host Client

Advertise here with BSA

Just a short post. I was getting a 404 error with the Host Client when hitting https://<ip of esxi host>/ui. No clue what it was caused by. I re-installed the latest version of the host client

Looking for the VROps VSAN Content Pack?

Advertise here with BSA

I just noticed the link for the VROps VSAN Content Pack had changed and it isn’t easy to find through google either. Figured I would post it quickly so at least it is indexed and easier …

I have memory pages swapped, can vSphere unswap them?

Advertise here with BSA

“I have memory pages swapped out to disk, can vSphere swap them back in to memory again” is one of those questions that comes up occasionally. A while back I asked the engineering team why we …

C# Client is officially dead…

Advertise here with BSA

Many of you have seen the news by now, yesterday VMware announced that the Windows vSphere Client, usually referred to as the C# Client, is dead. Yes indeed, it has been declared dead and going forward …

600GB write buffer limit for VSAN?

Advertise here with BSA

Write Buffer Limit for VSANI get this question on a regular basis and it has been explained many many times, I figured I would dedicate a blog to it. Now, Cormac has written a very lengthy blog on the topic …

How HA handles a VSAN Stretched Cluster Site Partition

Advertise here with BSA

Over the past couple of weeks I have had some interesting questions from folks about different VSAN Stretched failure scenarios, in particular what happens during a VSAN Stretched Cluster site partition. These questions were in particular …

Virtually Speaking Podcast Episode 7 – VSAN Customer Use Cases

Advertise here with BSA

The Storage and Availability Tech Marketing team runs a podcast called Virtually Speaking Podcast every week. This week it was my turn to be a guest on their show. We spoke about VSAN / use cases …

Cool fling: vSphere HTML5 Web Client! #h5client

Advertise here with BSA

Many have asked for it, today the first iteration of the vSphere HTML5 Web Client has been delivered through the VMware Flings website. After the huge success of the ESXi Embedded Host Client (one of …

VSAN 6.2, checksumming where you should

Advertise here with BSA

Today I was talking to a customer about the checksum functionality that is part of VSAN 6.2. They asked me if VSAN was still prone to bit rot scenarios, and they mentioned other potential bottlenecks like …

vMSC and Disk.AutoremoveOnPDL on vSphere 6.x and higher

Advertise here with BSA

I have discussed this topic a couple of times, and want to inform people about a recent change in recommendation. In the past when deploying a stretched cluster (vMSC) it was recommended by most storage vendors …

Want to hear all about VSAN 6.2? Watch the #SFD9 recordings!

Advertise here with BSA

Last week my colleagues had the pleasure to present at Storage Field Day 9 (SFD9). The topic was Virtual SAN, and more specifically what we released with 6.2 and how we are doing from a business …

VSAN Health checks disabled after upgrade to vCenter 6.0 U2

Advertise here with BSA

Yesterday at the Dutch VMUG I was talking to my friend @GabVirtualWorld. Gabe mentioned that he had just upgraded his vCenter Server to 6.0 U2 in his VSAN environment, but hadn’t upgraded the hosts yet. …

vSphere Beta coming soon….

Advertise here with BSA

If you are one of those guys (or girls of course) who likes to stay on top of his (or her) game, wouldn’t it be nice to be able to test the upcoming vSphere Beta? I …

Hybrid vs All-flash VSAN, are we really getting close?

Advertise here with BSA

For the last 12 months people have been saying that all-flash and hybrid configurations are getting really close in terms of pricing. During the many conversations I have had with customers it became clear that this …

VSAN 6.2 : Why going forward FTT=2 should be your new default

Advertise here with BSA

I’ve been talking to a lot of customers the past 12-18 months, if one thing stood out is that about 98% of all our customers used Failures To Tolerate = 1. This means that 1 host …

vSphere HA deepdive 6.x available for free!

Advertise here with BSA

I’ve been discussing this over the last 12 months with Frank, and to be honest we are still not sure what is the right thing to do but we decided to take this step anyway. Over …

EMC and VMware introduce VxRail, a new hyper-converged appliance

Advertise here with BSA

As most of you know I’ve been involved in Virtual SAN in some shape or form since the very first release. Reason I was very excited about Virtual SAN is because I felt it would provide …

What’s new for Virtual SAN 6.2?

Advertise here with BSA

Yes, finally… the Virtual SAN 6.2 release has just been announced. Needless to say, but I am very excited about this release. This is the release that I have personally been waiting for. Why? Well I …

Rebuilding failed disk in VSAN versus legacy storage

Advertise here with BSA

This is one of those questions that comes up every now and then, I have written about this before, but it never hurts to repeat some of it. The comment I got was around rebuild time …

SMP-FT and (any type of) stretched storage support

Advertise here with BSA

I had a question today around support for SMP-FT in an EMC VPLEX environment. It is well known that SMP-FT isn’t supported in a stretched VSAN environment, but what about other types of stretched storage? Is …

Jumbo Frames and VSAN Stretched Cluster configurations

Advertise here with BSA

I received a question last week from a customer who had implemented a stretched VSAN cluster. The Health Check after the implementation indicated that there was an “issue” with the MTU configuration. The customer had explained …

VSAN VROps Management Pack version 6.0.3 available

Advertise here with BSA

On the 15th the VROps Management Pack for VSAN 6.0.3 was released. If you have VROps Standard or higher you can take advantage of this management pack. It is supported for the latest release of VSAN, …

Removing stretched VSAN configuration?

Advertise here with BSA

I had a question today around how to safely remove a stretched VSAN configuration without putting any of the workloads in danger. This is fairly straight forward to be honest, there are 1 or 2 things …

Doing a stretched VSAN design?

Advertise here with BSA

As I have given various people already individually the formulas needed to calculate how much bandwidth is required I figured I would share this as well. If you are doing a stretched VSAN design you will …

SMP-FT support for Virtual SAN ROBO configurations

Advertise here with BSA

When we announced Virtual SAN 2-node ROBO configurations at VMworld we received a lot of great feedback and responses. A lot of people asked if SMP-FT was supported in that configuration. Apparently many of the customers …

2 is the minimum number of hosts for VSAN if you ask me

Advertise here with BSA

In 2013 I wrote an article about the minimum number of hosts for Virtual SAN. Since then this post has started living its own life. Somehow people have misunderstood my post and used/abused it in many …

Virtual SAN licensing / packaging

Advertise here with BSA

I’ve seen many questions on Virtual SAN packaging over the last 2 weeks so I figured I would share a table that shows what is possible with which license. A lot of the confusion is around …

Virtual SAN 6.1 available today!

Advertise here with BSA

What more do I need to say? vSphere 6.0 U1 was released today and it ships with Virtual SAN 6.1. By now you’ve all seen my posts on what’s new for VSAN 6.1 and you’ve hopefully …

HA/DRS configuration with Virtual SAN Stretched Cluster environment

Advertise here with BSA

This question is going to come sooner or later, how do I configure HA/DRS when I am running a Virtual SAN Stretched cluster configuration. I described some of the basics of Virtual SAN stretched clustering in …

NexentaConnect for VSAN for free? Get it now!

Advertise here with BSA

NexentaConnect

I was at VMworld last week and bumped in to the Nexenta team. They told me about this great promotion they are running (limited time!) for NexentaConnect. NexentaConnect provides you NFS storage on top of …

VMworld Session: VSAN – Software Defined Storage Platform of the Future #STO6050

Advertise here with BSA

Unfortunately I haven’t been able to attend too many sessions, only 2 so far. This is one I didn’t want to miss as it was all about what VMware is working on for VSAN and layers …

VMworld 2015: Site Recovery Manager 6.1 announced

Advertise here with BSA

This week Site Recovery Manager 6.1 was announced. There are many enhancements in SRM 6.1 like the integration with NSX for instance and policy driven protection, but personally I feel that support for stretched storage is …

What is new for Virtual SAN 6.1?

Advertise here with BSA

It is VMworld, and of course there are many announcements being doing one of which is Virtual SAN 6.1 which will come as part of vSphere 6.0 Update 1. Many new features have been added, but …

VMworld 2015: vSphere APIs for IO Filtering update

Advertise here with BSA

I suspect that the majority of blogs this week will all be about Virtual SAN, Cloud Native Apps and EVO. If you ask me then the vSphere APIs for IO Filtering announcements are just as important. …

Virtual SAN Ready Nodes taking charge!

Advertise here with BSA

Yes that is right, Virtual SAN Ready Nodes are taking charge! As of today when you visit the VMware Compatibility Guide for Virtual SAN it will all revolve around Virtual SAN Ready Nodes instead of individual …

Tintri announces all-flash storage device and Tintri OS 4.0

Advertise here with BSA


Last week I had the pleasure of catching up with Tintri. It has been a while since I spoke with them, but I have been following them from the very start. I met up with …

Using VM-Host rules without DRS enabled

Advertise here with BSA

This week I was playing with the VM-Host rules in my environment. In this particular environment I had DRS disabled and I noticed some strange things when I created the VM-Host rules. I figured it should …

Platform9 announcements / funding

Advertise here with BSA

Clearly VMworld is around the corner as many new products, releases and company announcements are being done this week and next. Last week I had the opportunity to catch up with Sirish Raghuram, Platform9‘s CEO. …

Virtual SAN going offshore

Advertise here with BSA

Over the last couple of months I have been talking to many Virtual SAN customers. After having spoken to so many customers and having heard many special use cases and configurations I’m not easily impressed. I …

Awesome fling: ESXi Embedded Host Client

Advertise here with BSA

A long long time ago I stumbled across a project within VMware which allowed you to manage ESXi through a client which was running on ESXi itself. Basically it presented an html interface for ESXi not …

High latency VPLEX configuration and vMotion optimization

Advertise here with BSA

This week someone asked me about an advanced setting to optimize vMotion for VPLEX configurations. This person referred to the vSphere 5.5 Performance Best Practices paper and more explicitly the following section:

Add the VMX option