Category Archives: VMware

I want vSphere HA to use a specific Management VMkernel interface


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This comes up occasionally, customers have multiple Management VMkernel interfaces and see vSphere HA traffic on both of the interfaces, or on the incorrect interface. In some cases, customers use the IP address of the first management VMkernel interface to connect the host to vCenter and then set an isolation address that is on the […]

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Posted in 6.0, 6.5, 6.7, ha, High Availability, Server, VMware, vSphere | Comments Off on I want vSphere HA to use a specific Management VMkernel interface

Mixing versions of ESXi in the same vSphere / vSAN cluster?


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I have seen this question being asked a couple of times in the past months, and to be honest I was a bit surprised people asked about this. Various customers were wondering if it is supported to mix versions of ESXi in the same vSphere or vSAN Cluster? I can be short whether this is […]

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Posted in 6.5, 6.7, Server, Storage, u1, u2, Virtual SAN, VMware, vsan, vSphere | Comments Off on Mixing versions of ESXi in the same vSphere / vSAN cluster?

vSphere HA virtual machine failed to failover error on VMs in a partitioned cluster


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I received two questions this week around partition scenarios where after the failure has been lifted some VMs display the error message “vSphere HA virtual machine failed to failover”. The question that then arises is: why did HA try to restart it, and why did it fail? Well, first of all, this is an error […]

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Posted in 6.0, 6.5, 6.7, BC-DR, failure scenario, ha, Server, testing, VMware, vSphere | Comments Off on vSphere HA virtual machine failed to failover error on VMs in a partitioned cluster

Part 1: Architect and Create Cloud Services Organizations for Skyline

In November of 2018, VMware Skyline became available as a VMware Cloud Service. The primary reason we enabled Skyline as a Cloud Services was to provide customer’s with greater control of their Skyline proactive findings and recommendations. This is pa… Continue reading

Posted in NSX, skyline, Support Experience, VMware, vSphere | Comments Off on Part 1: Architect and Create Cloud Services Organizations for Skyline

How to test failure scenarios!


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Almost on a weekly basis, I get a question about unexpected results during the testing of certain failure scenarios. I usually ask first if there’s a diagram that shows the current configuration. The answer is usually no. Then I would ask if they have a failure testing matrix that describes the failures they are introducing, […]

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Posted in BC-DR, failure scenario, Server, Software Defined, Storage, test, testing, Virtual SAN, vmsc, VMware, vsan, vSphere | Comments Off on How to test failure scenarios!

DQLEN changes, what is going on?


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I had a question this week on twitter, it was about the fact that DQLEN changes to values well below it was expected to be (30) in esxtop for a host. There was latency seen and experienced seen for VMs so the question was why is this happening and wouldn’t a lower DQLEN make things […]

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Posted in Server, sioc, Software Defined, Storage, Various, vmfs, VMware, vSphere | Comments Off on DQLEN changes, what is going on?

Device X is not listed on the vSAN Compatability Guide, can I still use it?


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I get this question almost daily, and I am pretty sure I have said this various times, but just in case it wasn’t clear I figured I would share the answer to the question whether a device should be used in a vSAN cluster when it is not listed on the vSAN Compatibility Guide? if you […]

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Posted in 6.5, 6.6, 6.7, 6.7 u1, Software Defined, Storage, Virtual SAN, VMware, vsan | Comments Off on Device X is not listed on the vSAN Compatability Guide, can I still use it?

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 […]

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Posted in 6.7, 6.7 u1, cloud, Data Recovery, deep dive, deepdive, Server, Software Defined, Storage, Virtual SAN, VMware, vsan | Comments Off on New book: VMware vSAN 6.7 U1 Deep Dive

CTO3509BU: Embracing the Edge: Automation, Analytics, and Real-Time Business


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This is the last post in this VMworld Sessions series. Although the title lists “CTO3509BU: Embracing the Edge: Automation, Analytics, and Real-Time Business” which is by Chris Wolf and Daniel Beveridge, I would also highly recommend watching Daniel’s other session titled “CTO2161BU Smart Placement of Workloads in Tomorrow’s Distributed Cloud“. Both sessions discuss a similar […]

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Posted in computing, edge, Server, Sessions, VMware, vmworld, vsan, vSphere | Comments Off on CTO3509BU: Embracing the Edge: Automation, Analytics, and Real-Time Business

HCI2164BU – HCI Management, current and futures


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This session by Christian Dickmann and Junchi Zhang is usually one of my favorites in the HCI track, mainly because they show a lot of demos and in many cases show you what ends up being part of the product in 6-12 months. The session revolved all around management, or as they called it in the […]

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Posted in beta, futures, Server, Software Defined, Storage, Virtual SAN, VMware, vmworld, vsan, vSphere | Comments Off on HCI2164BU – HCI Management, current and futures