Category Archives: VMware

Does a vSAN IO Limit impact resync traffic?


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A question just came in, and I figured other people may have the same question so I would share it. The question was if a vSAN IO limit would impact resync traffic or for instance SvMotion? In this case the customer defines limits within each policy to ensure VMs do not interfere with other VMs […]

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Posted in hci, hyperconverged, Server, Software Defined, Storage, Virtual SAN, VMware, vsan | Comments Off on Does a vSAN IO Limit impact resync traffic?

Site locality in a vSAN Stretched Cluster?


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On the community forums, a question was asked around the use of site locality in a vSAN Stretched Cluster. When you create a stretched cluster in vSAN you can define within a policy how the data needs to be protected. Do you want to replicate across datacenters? Do you want to protect the “site local […]

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Posted in 6.7, Server, u1, u2, Virtual SAN, VMware, vmware vsan, vsan | Comments Off on Site locality in a vSAN Stretched Cluster?

Site locality in a vSAN Stretched Cluster?


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On the community forums, a question was asked around the use of site locality in a vSAN Stretched Cluster. When you create a stretched cluster in vSAN you can define within a policy how the data needs to be protected. Do you want to replicate across datacenters? Do you want to protect the “site local […]

The post Site locality in a vSAN Stretched Cluster? appeared first on Yellow Bricks.

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Posted in 6.7, Server, u1, u2, Virtual SAN, VMware, vmware vsan, vsan | Comments Off on Site locality in a vSAN Stretched Cluster?

VMware RADIO Fun Run 2019


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William Lam and I have been organizing a “running” event at a VMware internal event called RADIO. RADIO is our yearly R&D Innovation Offsite and is usually held in San Francisco. What is this run? Well basically it started many years ago (7 or 8?) with a group of 4-5 runners meeting up at 6:00 […]

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Posted in radio, run, Various, VMware | Comments Off on VMware RADIO Fun Run 2019

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?