VSAN6.6.1

VSAN: Stretched Cluster Failure Scenarios explained

January 7, 2019 Stijn Depril 1

One of the most interesting features of VSAN, is the stretched cluster capability. It is safe to say, when we first introduced the stretched cluster capability, it wasn’t 100% ready. Sure, it worked, but it needed some improvements. Meanwhile we have made several improvements and have extended the stretched cluster feature set and it is now fully functioning & enterprise ready. Of course, with great claims come great responsibilities. So because we are always dealing with customer data, I always have a conversation with the customer about the actual expectations. This is especially the case if the client is thinking about using enterprise features such as stretched clustering.  Some customers have a very good understanding of business continuity others are not […]

No Image

The Evolution of Storage – A VMUG presentation (Dutch)

May 17, 2018 Stijn Depril 0

Back in March, I shared a presentation with Duncan Epping during the NLVMUG. This VMUG is one of the biggest and oldest VMUGs in the world. I presented the current state followed by Duncan, who is very well positioned to cover all the things that are still work in progress. A month ago the NLVMUG Usercon published the presentation video on YouTube. Enjoy this presentation.

Back 2 VSAN Basics

April 26, 2018 Stijn Depril 0

I see VSAN “in the wild” on a daily basis and very often I get questions about the basics of VSAN. Don’t get me wrong, questions are absolutely a good thing!  What I also see, is that people often ignore the practices and assume it will be OK with a next/next/finish. You guessed it right: This doesn’t go well! Therefor I have decided to start with ‘a VSAN basics’ blog series. What is VSAN What’s important to run VSAN well And why is it important for the success of your project Let’s start with a bit of history For the last decades we have been procuring new storage in the same way as we used to do in the previous […]

RAVELLO: Troubleshooting VSAN Network connectivity issues

March 28, 2018 Kim Bottu 0

Yesterday night, I was setting up a new VSAN cluster on Ravello and got hit with a network issue: Apparently my network was partitioned!   The network for all hosts has been setup similarly on all hosts, so the network partition issue didn’t make much sense. MGMT Kernel: MGMT and vMotion traffic vmk0 10.1.0.1x VSAN Kernel: VSAN traffic vmk1 10.1.0.2x Unfortunately esxi004.vmusketeers.local had been added to a separate partition! Rather than checking each host separately, I used the VSAN PowerCLI commands to figure out if my hosts were properly configured for VSAN networking. PS C:\Windows\system32> $vsanhealth.networkhealth HostResult : {VMware.VimAutomation.Storage.Impl.V1.Vsan.Health.VsanHostNetworkHealthResultImpl, VMware.VimAutomation.Storage.Impl.V1.Vsan.Health.VsanHostNetworkHealthResultImpl, VMware.VimAutomation.Storage.Impl.V1.Vsan.Health.VsanHostNetworkHealthResultImpl, VMware.VimAutomation.Storage.Impl.V1.Vsan.Health.VsanHostNetworkHealthResultImpl} HostCommunicationFailure : HostDisconnected : HostInEsxMaintenanceMode : HostInVsanMaintenanceMode : HostWithVsanDisabled : IssueFound : True LargePingTestSuccess : False MatchingIPSubnets : True MatchingMulticastConfig […]

VSAN 6.5 and 6.6.1 resources calculator

November 11, 2017 Kim Bottu 0

The old sheet has been modified to fall in line with the “10.2 Capacity Sizing Example II” of the VMware® vSAN™ Design and Sizing Guide for 6.5 and 6.6.1. You can download the spreadsheet here: https://vmusketeers.com/vsan-6-6-1-resources-calculator/   Kim   ps: If you see errors or have remarks,  feel free to comment.