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3 Generations of My Homelabs
Posted by Askar Kopbayev on August 15, 2017
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Sooner or later every single IT guy comes to the idea of having some lab. There are a million reasons why you would need a lab: learning new technologies, improving skills, trying crazy ideas you would never dare to try in the production network, you name it. Even though it is a work-related activity for most home labbers this is just another hobby for many of us.  That’s why people spend so many hours of their personal time building the homelab, investing significant funds into new hardware, thoroughly planning its setup, looking for a help in online communities or sharing their experience to help others. There is a whole universe of home labbers and I am happy to be part of this community.

In this post, I would like to share my experience with 3 generations of home labs I have had so far and the thoughts about next generation.

high-level network diagram

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VMware vCenter Server Appliance Homelab tips
Posted by Vladan Seget on June 15, 2017
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Many IT administrators or virtualization guys runs their homelabs at home. It is a good way to learn new technologies, be able to break things in a lab to get stronger skills.

It is sometimes a challenge, to squeeze as much RAM as possible from it. The main challenge is always a memory utilization. VMware VMs are getting memory hungry all the time and they are not “optimized” for Homelab use, but rather for production environments. Yes, it is the main purpose of those VMs after all.

One of the large VMs, but most critical, is VMware vCenter Server Appliance (VCSA). This product is becoming very popular within VMware communities and it is very easy to setup. Today we will have a look if we can do some optimizations and some “tweaks” to make it less memory hungry.

Set service startup manual

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Supermicro SuperServer E200-8D/E300-8D review
Posted by Alex Khorolets on April 21, 2017
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These days, more and more companies need high-quality, reliable and efficient server hardware.  Home labs used by enthusiasts and professionals in the IT sphere for software developing and testing, studying for an IT certification, and configuring virtual environments became popular as well. Small companies are also interested in cheap and compact servers, the production of which is based on a couple of virtual machines or networking applications.

Supermicro company ranks one of the leading positions in server development for a long time. Supermicro products range from the Hi-End clusters to microservers. Recently the company released two compact servers: SuperServer E200-8D and its younger model – SuperServer E300-8D.

Supermicro SuperServers

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vSphere 6.5: HA & DRS improvements. Part I
Posted by Askar Kopbayev on March 2, 2017
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A number of improvements that have been introduced in vSphere HA and DRS in the last several years are impressive. vSphere 6.5 continues this tradition by bringing new features into HA Admission Control, by adding flexibility with HA Orchestrated Restart and by enabling DRS to make more intelligent balancing.

I will be trying a new format today. First, I will be explaining the challenges you might have had in previous vSphere releases and then I will show you how the new vSphere 6.5 HA & DRS features address those challenges.

vSphere admission control cluster resource percentage

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RAM Disk technology: Performance Comparison
Posted by Alex Khorolets on February 23, 2017
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Introduction

Since every computer now has a volatile amount of available storage located in the RAM, when compared to other direct-access memory used for data storage, for example, hard disks, CD-RWs, DVD-RWs and the older drum memory, the amount of time used to read/write the data differs in correspondence to the physical location and/or the medium used for reading/recording (rotation speeds and arm movement) the data.

The implementation of RAM as a storage provides a list of benefits over other conventional devices, due to the fact of the data being read or written in the same amount of time irrespective of the physical location of data inside the volume. Taken into consideration all the information mentioned above, it would be a crime not to take advantage of the provided conditions.

RAM

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4U Storage Pods offer 240TB of storage for 3.6 cents/GB
Posted by Oksana Zybinskaya on May 5, 2016
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backblaze

As we know, Backblaze publishes the specifications its product – Storage Pods, and recently it has announced its sixth generation design, with the number of disks rising from 45 to 60 while reducing costs down even further.

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