John Nicholson

Recent Posts

What is the Maximum vSAN VMDK Size?

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How big should my VMDKs be on vSAN? I recently was asked about VMDK size best practices with vSAN. The maximum supported VMDK size is 62TB. Much like discussions around the largest size for a vSAN or vSphere cluster (Check out this post!), this is very much a nuanced operational discussion with a lot of Read more...
UCP-UC

Hitachi UCP-HC Powered by vSAN

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Recently Hitachi Vantara released an update to their vSAN powered UCP-HC product suite and I took some time catching up with Dinesh Singh. UCP-HC – Standing up a Cluster UCP-HC is Hitachi’s product that evolved on from their previous EVO:RAIL appliance offering to allow automation and standup of vSAN powered HCI. UCP-HC now uses UCP Read more...
Common vSAN Networking

Common vSAN Networking, NIC and Switch Questions

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This post will wrap up some common vSAN networking questions and includes helpful links for solutions to network-related configuration, device selection, and device configuration. The vSAN Networking Guide on StorageHub also holds a lot of great content on this subject. vSAN Networking Update Part – 1 What should I consider when shopping for a switch? Read more...

VMware Cloud Foundation Migration Guide Update

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A major update to Workload Migration Strategies with VMware Cloud Foundation I co-authored with Health Johnson. This paper outlines how to at scale migrate existing workloads, running on your legacy vSphere infrastructure, into your VMware Cloud Foundation based private cloud. It covers two common migration approaches and includes live migration options for important tier 1 Read more...
capacity changes

Is VMware Cloud Foundation (VCF) Single Socket Supported?

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Previously to VMware Cloud Foundation (VCF) you needed to check if hosts where on the VCF Compatability Guide. This being a subset of the ReadyNode program was limited to fewer options that only included two-socket servers.   As of VCF 3.0, this has changed. Along with Bring Your Own Network (BYON), we no longer certify Read more...
VMware Cloud Foundation

How vSAN Simplifies VMware Cloud Foundation

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I recently was asked about the operational benefits and cost of ownership of using vSAN with VMware Cloud Foundation. Jeff Hunter posted an excellent blog covering why “VMware Cloud Foundation Starts with vSAN.” Having worked with vSAN in production, it simplified how we provisioned and managed storage. While no single action in standing up a Read more...
SPBM policy exceptions

SPBM Policy Exception Cases

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vSAN Object Types There are a number of different object types within VMware vSAN. The most common ones are: VM home namespace – Location for VM configuration and log files. VM swap object – Created for the VM swap file (only created when the VM is powered on). VMDK – Stores the data that is Read more...
Domain design vSAN

VMware Validated Design – vSAN Management Domain Design

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I recently had some discussions with a customer trying to decide on some design decisions for a VMware Validated Design (VVD) being deployed. While a lot of design decisions are fairly straight forward, (The Distributed Switch is arguably superior to the standard switch) a lot of vSAN data services decisions require some nuance and understanding Read more...
hyperconverged infrastructure

Designing vSAN Networks – 2019 Update part 2

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Back in 2017, I wrote three blogs that covered some common vSAN network design choices: Designing vSAN Networks – Dedicated or Shared Interfaces? Designing vSAN Networks – Why Should I Use the Distributed Switch? Designing vSAN Networks – Using Multiple Interfaces? I thought it would be a good idea to start out the new year Read more...
hyperconverged infrastructure

Designing vSAN Networks – 2019 Update

posted

Back in 2017, I wrote three blogs that covered some common vSAN network design choices: Designing vSAN Networks – Dedicated or Shared Interfaces? Designing vSAN Networks – Why Should I Use the Distributed Switch? Designing vSAN Networks – Using Multiple Interfaces? I thought it would be a good idea to start out the new year Read more...