In this section, I will go over the following objectives found within the VMware vSAN Specialist Blueprint: Objective 3.1 – Identify physical network requirements
Objective 3.1 – Identify physical network requirements
Let’s start with the network basics.
- Dedicated network port for vSAN traffic
- 10GB (dedicated or shared) highly recommended, required for all flash deployments) <1ms latency
- 1GB dedicated for hybrid setups. Real work environments would suffer with 1GB (Minus ROBO) <1ms latency
- vSAN VMkernal port required for each ESXi host, even if it isn’t contributing storage
- ESXi hosts within a vSAN cluster must all utilize Layer 2/3 upstream
Continue reading “Becoming a vSAN Specialist: Section 3 – vSAN Configuration”
In this section, I will go over the following objectives found within the VMware vSAN Specialist Blueprint: Section 2 – vSAN Fundamentals
Objective 2.1 – Provide a high-level description of vSAN
Introduction to vSAN
vSAN is an enterprise-class software storage solution built directly into the VMware platform. It runs on commodity hardware (x86) or vSAN Ready nodes. What does this mean? Instead of having a separate software solution controlling the storage, the actual ESXi hosts alongside with vSphere have the vSAN technology (Software Defined Storage) built directly into the kernel/software. This software then utilizes the commodity hardware (compute, storage, network) within the host/appliance to create the perfect marriage of virtualization and software defined storage. It utilizes storage policies to intelligently place VM objects on underlying local storage. This is the special sauce that makes vSAN so great. It automates storage on many levels, which in turn leads to significant simplification with regards to how storage is provisioned and managed.
Why is this important? Instead of having to buy separate software, you can utilize this software since it’s already a part of vSphere. This in combination with local disk installed within x86 hardware makes the vSAN solution a truly modern and software defined solution. This reduces costs and complexity.
Continue reading “Becoming a vSAN Specialist: Section 2 – vSAN Fundamentals”
In this section, I will go over the following objectives found within the VMware vSAN Specialist Blueprint: Section 1- Storage Fundamentals
Objective 1.1 – Identify storage device characteristics
vSAN is very similar to today’s traditional storage technologies; however, there are some key differences and unique configurations vSAN utilizes to make it the technology it is today. Here are some of the storage device characteristics that make vSAN hum. These are also requirements in order to use vSAN. Be sure to check out the HCL for vSAN, as it’s the TRUTH and should always be followed to ensure success!
Continue reading “Becoming a vSAN Specialist: Section 1 – Storage Fundamentals”
Late last year, I made the decision to obtain the vSAN Specialist badge (2VB-601) that VMware just recently began offering. While I currently don’t have the necessary home lab equipment, I plan to get started and then figure out the lab situation. My ideal plan is to have a three node NUC cluster running vSAN, but this may change. Regardless, the most important thing is to start, so here we go!
Continue reading “Becoming a vSAN Specialist: The Process Begins”
Before building out your vSAN cluster, one thing that you should be conscious of is that of maintenance activities. Some time ago, someone told me “Anyone can make something work, but few take the time to think of the long term implications (years from now) of setting things up a certain way”.
Continue reading “Maintenance Mode within vSAN”
Introduction to VM Storage Policies
One of the great features within vCenter is the ability to create VM Storage Policies. What are VM Storage Policies?
According to VMware Official documentation, VM Storage policies are specific requirements placed upon underlying storage to ensure desired characteristics are met.
Continue reading “How to: Creating VM Storage Policies in vSAN”
One of the most powerful technologies today in Storage is a feature called Deduplication. Deduplication is technology that references data once instead of multiple times. This allows for insane Data Reduction. For instance, if you had 600GB of data with a 6:1 Dedup ratio, only 100GB would actually be stored! Dedupe within vSAN is done on 4KB Block level.
Continue reading “How to: Enabling Deduplication and Compression in vSAN”