Educational Episodes: Hyperconverged Infrastructure (HCI)

This post addresses Hyper-V live migration – the topic which any admin faces with at some point. In my salad days of working as an admin, Hyper-V live migration was a saving grace, so I decided to write an article about it.

Live migration is Hyper-V feature for moving non-disruptively a VM from one host to another. Users love this feature for flexibility and absence of downtime. You can easily migrate a VM from one host to another and it neither idles nor has to be shut down. On top of that, live migration, when paired with failover clustering, allows building highly available and fault-tolerant systems. Well, that’s why these technologies always come hand in hand.

In this article, I want to cover some live migration and migration wizard settings that ensure maximum performance of this process.

In October 2018, Microsoft officially launched the newest version of Windows Server – Windows Server 2019, and earlier this month it became available to the public. Microsoft is known throughout the globe for its excellent software products, operating systems, computer systems, and other consumer electronics. Windows Server 2019 is the first and the only Microsoft product that went straight to general availability without going through the release to manufacturing (RTM) phase. But, did Windows Server 2019 satisfy the customers’ expectations? What are its main features? Let’s scrutinize from every angle.

IT administrators are always confronted with the problem of building innovative, fast, modern, and reliable IT infrastructure that fits the budget and saves resources for future growth. To commence, you should plan, select, re-plan, clarify goals, and so on ad infinitum in a vicious circle. However, the issue of guaranteeing the data safety will always be relevant on the agenda. Choosing a SAN (Storage Area Network) with the iSCSI protocol as one of the possible storage solutions will ensure data security and constant availability. In addition, this approach is cost-effective in terms of maintenance and support.

Let’s imagine a situation: a power outage went out and an incorrect server shutdown has occurred. Everything is aggravated by the fact that you have no power backup. What will happen to your write operations? They sink into oblivion and data will be lost. But StarWind says “no” to these troubles! Log-structured Write-Back Cache (LSWBC) is a StarWind feature which speeds up the processing of write requests and saves data when the server is incorrectly shut down. What about RAM caching? Your data also will be saved.

Do you know that not every solution requires high available storage? Sometimes there is a need in functionality that gives us the option not to leverage any OS caching. Precisely this UseWriteThrough option you can find in the New-SBMMapping commandlet in Windows Server 2019. It allows a user to disable caching with SMB mappings in certain scenarios thus giving a possibility to prefer reliability over performance in non-continuously available file share scenarios. So, always check “paper proof of concepts” and find the best options for your IT infrastructure and business development!

One, two, three … Let’s roll! StarWind presents an updated functionality of V2V Converter. The utility enables conversion of a physical machine into a virtual one (P2V) and other way around. For example, you have a server with Windows Server 2012R2 installed running some critical application. With physical-to-virtual (P2V) entire host or specific physical drive (or volume) can be migrated. What else? The pressure is on! Now your VMs can be migrated directly between Hyper-V and ESXi (and backwards). Moreover, StarWind V2V Converter offers bi-directional conversion between all the major VM formats: VMDK, VHD/VHDX (Windows Repair Mode aware), QCOW2, and StarWind native IMG.

VPN connections provide remote access to the necessary data and you can get information about your company’s assets at any time. The connection to Azure virtual networks is possible by configuring two types of VPN, namely Site-To-Site (S2S) and Point-To-Site (P2S). S2S VPN allows you to connect two networks and constantly maintain communication between them. P2S VPN is effective for connecting to a virtual network from a remote location if you have a small number of clients for whom such an access is needed. You’re asking how to establish a secure connection of individual clients running Windows 10 to the Azure Virtual Network?

VMware vSphere 6 offers all new and new features including a new VMware vCenter management services architecture. vCenter 6.0 can be deployed in embedded and external options and separately as a Platform Services Controller (PSC) and as vCenter. If the Platform Services Controller (PSC) provides common infrastructure services for the data center, then the vCenter Server ensures the remainder of the vCenter Server functionality. But you’ll agree, it would be great to have a common platform that combines both solutions. This option would help reduce the number of VMs per sites without any load balanced dependencies and provide fault tolerance.

VMware Tools is a handy utility suite that makes your VMs run faster and dramatically simplifies their management on the whole. And, the nice thing is, it installs fairly easy on your VMware VMs regardless of their guest OS. Today, I’m going to talk about VMware Tools in general and how to install the package in different environments.