Recent Posts

PowerCLI Cookbook for vSAN

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As someone who started using PowerShell since the first release, it is one of my favorite tools. Before coming to work in the vendor space, PowerShell was my go-to tool for management at scale. As an administrator that spent a considerable amount of time working with Windows physical and virtual machines, PowerShell made uniform management Read more...

What’s New in vSAN 6.7 Update 1

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VMware vSAN is the market leader in HCI. One of the many driving forces that has helped solidify this position, is the rapid and continuous pace of innovation. VMware has always given customers the power of choice, and this continues into the hybrid cloud era. VMware’s digital foundation gives customers the ability, and flexibility to Read more...

More vSAN Cmdlets in PowerCLI 11!

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There’s a new release of PowerCLI, and it includes some more vSAN goodness! We’ve added some capabilities previously found in the Ruby vSphere Console and have also updated a couple of the existing modules   The new and updated cmdlets include: Get-VsanObject makes it easy to get information about a vSAN Object or a VM’s Read more...
Mixed MTU

Understanding Mixed MTU support in Stretched & 2 Node vSAN 6.7 U1 clusters with Witness Traffic Separation

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Witness Traffic Separation introduced the ability to tag “witness” traffic on an alternate VMkernel interface on vSAN data nodes. Witness Traffic Separation is the feature that enabled 2 Node “Direct Connect” in vSAN 6.5, and was also added to later editions of vSAN 6.2 (vSphere 6.0 Update 3 & higher). Some additional logic was added Read more...
Witness Consolidation

Understanding vSAN Witness Consolidation & 2 Node vSAN

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The vSAN Witness Appliance was introduced as a free alternative to using a physical ESXi host as a vSAN Witness Host. This appliance is only used for housing vSAN Object Witness Components, and is not allowed to run any virtual machine workloads. When deploying the vSAN Witness Appliance, there are 3 potential deployment options: Tiny, Read more...
vSAN Encryption

Understanding vSAN Encryption – KMS Profile Addressing

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When using vSAN Encryption, one of the vSAN Health Check tests will show the health of the connection between the vSAN Hosts and the KMS Cluster as well as vCenter and the KMS Cluster. One scenario came up a few weeks ago where the vSAN Health Check indicated that the vSAN Hosts could properly communicate Read more...
traditional datastores

Understanding vSAN – Can it be used with Traditional or VVol Storage?

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On a call today this question came up: “Can vSAN be used with other storage?” This is a very common question, covered in the vSAN FAQ on storagehub.vmware.com, as well in other publicly facing VMware.com documentation. The answer is an absolute YES! A vSAN Cluster can also use traditional datastores and/or use VVols. This doesn’t mean that vSAN Read more...
vSAN Encryption

Understanding vSAN Encryption – “Erase disks before use”

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A few questions routinely come up when using “Erase disks before use” with vSAN Encryption.   What occurs when “Erase disks before use” is used? First, it is important to understand that this does not destroy active data. The rolling reformat process evacuates data from a disk group, to another disk group, before beginning the encryption Read more...

Understanding vSAN Encryption – Booting when vCenter is Unavailable

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Since the introduction of vSAN Encryption in vSAN 6.6 some of the routine questions that get asked include: Do vSAN hosts get encryption key information from vCenter? What if vCenter is offline, is vSAN encryption impacted? What if vCenter is removed/replaced/not available, is vSAN impacted? The answers to these are pretty straightforward and easy to Read more...