Posted by Didier Van Hoye on December 27, 2018
Is Microsoft really considering an acquisition of Mellanox?

Carsten Rachfahl and I were working in the lab together last week. In the evenings during our end of year self-improvement hackathon. We had both seen the rumor that Microsoft was considering buying Mellanox. While we love Mellanox and Microsoft technologies I have mixed feelings about the rumor. It’s no secret that I use Mellanox cards and switches to deliver on our quest for excellence. Not because we make money from selling Mellanox but because they deliver great value for money. Their NICs and switches allow me to have 25Gbps at a cost and quality level traditional network companies won’t allow.

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Posted by Paolo Valsecchi on December 20, 2018
Office 365 update AD FS SSL certificate with Azure AD Connect

When the AD FS SSL certificate of your Office 365 infrastructure is about to expire, you need to update the AD FS SSL certificate accordingly to avoid services disruption. During the configuration of the Office 365 environment you need to install an SSL certificate to establish a secure communication between Office 365 components. To easily update the SSL certificate for both AD FS and WAP Servers you can use the Azure AD Connect tool. This procedure works also if the user sign-in method is not AD FS.

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Posted by Alex Samoylenko on December 18, 2018
VMware vSphere 6.7 Network I/O Control – getting under the hood

Generally, Network I/O Control (NIOC), a traffic-specific vSphere Distributed Switch (vDS) mechanism of network bandwidth regulation, is not common knowledge for VMware vSphere administrators. Probably, the reason is that NIOC is a vSphere Enterprise Plus feature. This means that many users, basically, do not have a chance to try it out as this license is quite expensive. Anyway, I believe it is good to know about NIOC. Being introduced in vSphere 4.1, back in 2010, this technology was something like a real breakthrough. NIOC appeared when 10G networking was becoming increasingly prevalent. It became clear that thanks to high network throughput you can go with fewer network adapters in ESXi hosts. On the other hand, having such a broad channel often faced users with another challenge: distributing the massive network bandwidth between various traffic types.

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Posted by Florent Appointaire on December 13, 2018
[Azure] Create a user with Azure Function

In the following 3 articles, we’ll see how to automate the user creation, with Azure Function, with a SharePoint Online interface and with a PowerApps application. To start in this first article, we will see how to create our new user, with an Azure Function.

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Posted by Gary Williams on December 11, 2018
SPF, DKIM and DMARC

Over the past few weeks, I have been dealing a lot with spoofed email and unfortunately, in a few cases, the consequences of someone falling for a spoofed email. I do not blame the people who fall for them as the ones I have seen have been incredibly convincing. Today’s Anti-spam solutions are good once they have been tuned a little (and for this I always advocate whitelisting known good domains), but they will often pass spoofed email because essentially, a spoofed email is a legitimate business email. In fact, the people crafting these things do not want them to be caught up in a spam filter as the email is designed to fool someone into thinking it is real, clearly another mechanism is required to handle such emails – Enter SPF, DKIM and DMARC.

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Posted by Nicolas Prigent on December 4, 2018
Configuring Hyper-V Replica on Azure – PART 2

In order to replicate your Hyper-V Virtual Machines between two hosts, the replication process must copy the snapshot from the primary host to the secondary host. Why using the Hyper-V Replica? This allows you to run a standby server with copies of the VMs ready in case of business continuity and disaster recovery.

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Posted by Nicolas Prigent on November 29, 2018
Configuring Hyper-V Replica on Azure – PART 1

If you work with Azure, you probably know that you can run Hyper-V in Azure using the Nested Virtualization. Why? It can be interesting to use this architecture for testing purpose. Of course, the price will be always higher than a local hardware in your own on-premises lab. You can use Nested Virtualization since Windows Server 2016 and Windows 10. To create a new Virtual Machine, you must use one of the instance sizes like Ev3 or Dv3. So, in a next article, I will explain how to create and configure your Hyper-V Host in Azure from scratch, but in this guide, I will use the great JSON template created by Chris Pietschmann to easily deploy the Hyper-V hosts.

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Posted by Boris Yurchenko on November 21, 2018
Log-structured Write Cache – forget about post-blackout full syncs

In this blog post, I will make an overview of how Log-structured Write Cache can be configured. Additionally, I will make some power outage tests to check the operation of LWC under the conditions that are pretty close to the real power outages, which, in fact, are the most common reason for the full synchronization triggered on StarWind HA devices. Check the list of possible reasons of full sync to get a better idea about the cases where LWC can help you.

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Posted by Didier Van Hoye on November 15, 2018
Windows Server 2019 introduces a new SMB Mapping Option UseWriteThrough

A standard SMB share leverages caching to make things work fluently. Hiccups are hidden and file processing appears to go fast as caching often makes things looks faster than they are under the hood. For the vast majority of knowledge worker applications that support working against a file share, i.e. Word, Excel, PowerPoint and many other tools this works fine. For software that requires and is dependent on an absolute guarantee data is consistent and persisted at all times this is not enough. Backups to file shares are one such use case. If the SMB Shares “lies” to the SMB client that all is written to storage but it is actually still cached things can go wrong.

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Posted by Nicolas Prigent on November 8, 2018
Configuring Azure Point-to-Site VPN with Windows 10

In this article, we will focus on how to connect our local network to our Azure Virtual Network.

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