“Space is running low in /ddvar. Please clear space or core dump capability will be disabled.”
Today I stumbled upon an interesting issue while prepping for a Data Domain upgrade. The first step taken to prepare for a Data Domain OS upgrade is to reboot the appliance beforehand. This ensures no issues are present before upgrading. If issues are present, they will most likely be brought to light before the upgrade. This is especially important if your system has been up for an extended period of time!
Continue reading “How to: “Space is running low in /ddvar. Please clear space or core dump capability will be disabled.” on Data Domain”
After a slight delay, I was driving home Friday when I received confirmation of my vExpert 2018 application. The result?
I am happy to announce that I have officially achieved VMware vExpert 2018! This was my first year to apply, and I am very fortunate to have obtained this award/recognition.
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”
After about a month of preparation, I was able to successful sit Amazon’s AWS Cloud Practitioner exam. This is the first of many that I hope to obtain. I was unable to obtain the AWS Solutions Architect Associate at first go, so I regrouped and took this foundation course in hopes that it would boost my knowledge and reinvigorate my desire to pass the AWS Solutions Architect Associate exam. The exam was a good overview of the offerings AWS has to offer. I highly recommend it for anyone looking to dip their toe in AWS.
Continue reading “New Certification: AWS Cloud Practitioner”