Educational Episodes: Hyperconverged Infrastructure (HCI)

In the modern IT world, almost every tech guy, no matter a systems administrator or an engineer, wants his environment to show the best results that can be squeezed out of the hardware. In this article, I want you to take a look at the StarWind support of an iSER technology which stands for the iSCSI Extensions for RDMA. There’s not much of a change in the overall system configuration. iSER is utilizing the common iSCSI protocol by using the RDMA transport service that can be used on some network adapters with hardware offload capability. This means that iSER can supply higher bandwidth, intended for large transfers of block storage data.

Microsoft SQL Server 2016 has a pretty decent feature set to achieve cost-effective high availability for your environment and build a reliable disaster recovery solution. Basic Availability Groups (BAGs) and Failover Cluster Instances (FCI) are included in SQL Server 2016 Standard Edition and serve to implement high redundancy level for business-critical databases. In this article, I would like to discuss some differences between these solutions and open the curtain on how it can be done with Software-Defined Storage like Storage Spaces Direct (S2D) and VSAN from StarWind (StarWind VSAN).

VMware has recently released VMware vSphere APIs for I/O Filtering (VAIO), a handy document that highlights the VAIO I/O Filtering technology operational principles. Here, we shed light on them briefly and discuss how VAIO can be implemented in a production environment. VAIO is a technology and an API providing the direct access to the virtual machines’ guest OS I/O Stream. VAIO is already employed in partner products for maintaining various tasks (i.e., caching write-back and write-through). VAIO is based on the Storage Policy Based Management framework, dedicated to managing virtual machines storages and set the storage rules.

Microsoft continues to invest and expand its PowerShell Scripting Environment but sometimes it is necessary to use a graphical interface in order to manage systems. This is the reason why Microsoft also develops a new management tool called “Project Honolulu”. Honolulu is the modern evolution of traditional MMC, first introduced in 2000. Now, it’s time to update our management tools! In this article, I will describe how to download and install Honolulu.

Since some time, VMware provides PowerCLI which is a set of modules for VMware vSphere. Except if you were in a cave last 10 years, you should know that PowerShell is a powerful scripting language. Initially, PowerShell enabled to manage only Windows Workstation or Server, but since sometimes, a lot of vendors make their own modules to manage their solutions (such as Veeam, VMware and so on). Moreover, PowerShell is available on Linux. For my job, I always use PowerShell. I’m a lazy guy, and if I have to make something two times, I make a script. This is the same thing for VMware vSphere. In this topic, we’ll see how to connect to vCenter and some commands to start.

There have been a lot of high profile security breaches this year, the highest profile has to be that of Equifax as that is a breach which has the potential to run and run for some time to come. Deloitte also got breached and alongside those large companies which should have known better, there have been various others impacting systems such as Disqus. Of course, once it was made clear how the breach occurred, a lot was said about how bad it is that the breaches accorded and how it should never have happened and this is quite valid from a technical standpoint but, the reasons that these security issues were allowed to exist go far beyond the technical and into the realm of human factors.

When Availability Groups were introduced in SQL Server 2012, they were only available in Enterprise Edition. This made it challenging to move from Database Mirroring to Availability Groups, especially if you’re running Standard Edition.  To upgrade and migrate from Database Mirroring in Standard Edition, you either choose to upgrade to a more expensive Enterprise Edition license and implement Availability Groups or stick with Database Mirroring and hope that everything works despite being deprecated.

When it comes time for your vSphere upgrade there are many different approaches to how you perform the upgrades on your ESXi hosts.   An administrator who looks after a small cluster may update one way, whereas an administrator who looks after an enterprise with 1000s of hosts may opt to go another.  Also, depending on how your environment is deployed you might want to choose one method over another.  Factors such as a whether or not your hosts are managed by a vCenter server, whether or not they are members of a cluster – these things all impact the methods in which you chose to update to the latest version of ESXi.  Certainly, some methods are much more simplistic than others to perform, some offer more advantages when upgrading at scale, and some are more prone to user error – let’s take a look at each method of upgrading our hosts below and discuss the benefits and drawbacks of each…

One of the best freeware applications which gather a lot of information about VMware vSphere id definitely RVTools utility. Today we’ll have a look at some features which are the most useful ones for IT admins. RVTools is a Windows .NET 4.0 application which uses the VI SDK to display information about your virtual environments. So, before you download and install the tool, you’ll need to check if your Windows system has at least .NET 4.0 installed.