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Posted by Andrea Mauro on August 9, 2018
Security threats in a virtual environment

Security is typically a hot-topic due also to several regulations and compliant rules and laws. But more important, a security breach can have huge collateral effects, also if no data has been stoled, or compromised. But, for example, a “simple” DoS attack that makes a service not available can have a bad effect on the reputation of a B2C company. This post will try to give an idea of some possible security threads in a virtual environment based on VMware vSphere (but several concepts are quite general also for other virtualization platforms) and some possible approaches to minimize the effect or prevent the attacks.

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Posted by Askar Kopbayev on July 26, 2018
Hybrid Cloud Extension – Part 2

If you ever worked with vSphere, you definitely used at least one of those. However, in HCX they are used with Secure Proxy. All migration traffic is proxied via HCX WAN Interconnect appliance (WAN-IX). Deployed WAN-IX simulates new ESXi host under local vCenter. You can actually see it in the Web Client inventory. From the point of view of vCenter and other ESXi host the WAN-IX is just another regular host.

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Posted by Alex Samoylenko on June 28, 2018
VMware Skyline – Advanced Technical Support for Large Virtualized Environments

For some reason, VMware Skyline is not common knowledge for VMware vSphere admins and VMware products users on the whole. Skyline is VMware proactive support technology allowing to provide advanced technical support for VMware vSphere products (including vSAN 6.6 and later) and VMware NSX. Soon, some other products will be supported. But wait, what is this service actually for? To make that thing clear for everyone, I’d like to shed light on VMware Skyline in this article.

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Posted by Vladyslav Savchenko on June 26, 2018
Secure your data for good with Challenge Handshake Authentication Protocol

Today we will look at one of them – Challenge Handshake Authentication Protocol or CHAP. Before we start, let me tell you a few words about CHAP. Challenge Handshake Authentication Protocol (CHAP) is a network login protocol that uses a challenge-response mechanism. You can use CHAP authentication to restrict iSCSI access to volumes and snapshots to hosts that supply the correct account name and password (or “secret”) combination. Using CHAP authentication can facilitate management of access controls because it restricts the access through account names and passwords, instead of IP addresses or iSCSI initiator names.

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Posted by Alex Samoylenko on March 22, 2018
Generating a Support Bundle: How to Retrieve Virtual Infrastructure Logs from VMware vCenter and ESXi Servers

One day, any VMware administrator may require the so-called “support bundle” which contains log-files, diagnostic information, and performance metrics. Taken together, these parameters allow troubleshooting VMware vSphere. The bundle provides VMware GSS (Global Support Services) the insight into virtualized environment configuration which allows them to resolve issues, when a client submits a support ticket with this bundle attached.

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Posted by Andrea Mauro on March 13, 2018
CLI vs. GUI for VMware Admins

The term User Interface (UI) is used for specifying how a user interacts with a specific device, or software. CLI and GUI are two different types of possible user interfaces. Let’s analyze those different approaches and the pro and cons of them, using the VMware vSphere environment as an example.

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Posted by Andrea Mauro on January 31, 2018
Why upgrade to VMware vSphere 6.5 (or why not)

VMware vSphere 6.5 is the latest version of the enterprise server virtual platform from VMware, but the new beta it’s already there for testers. Actually the next version it’s (in the beta). If you are building a new infrastructure from scratch the latest stable version is probably the best choices (for most cases); but what about if you have an old environment and you plan to upgrade it?

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Posted by Vladan Seget on January 23, 2018
5 Tips to Master VMware vCenter Server Appliance

VMware vCenter server appliance is evolving with every major release of VMware vSphere Suite. The product, which manages the whole vSphere infrastructure, can be either installed on a Windows server or deployed as pre-configured virtual appliance called vCenter Server Appliance (VCSA). Over several VCSA releases, VMware managed to make this product equal to the Windows-based one, and it pushes the development even further so now the Linux based product has more features than the vCenter server installed on Windows. However, many VMware admins are also Microsoft guys and like the graphical user interface to work with. That’s why today we’ll have a look at 5 Tips to manage this appliance. We won’t go into the configuration steps within this post as this has been documented many times.

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Posted by Alex Samoylenko on January 10, 2018
5 useful tips to work with VMware vCenter Server Appliance 6.5

Nowadays, many VMware vSphere administrators manage their virtual infrastructures with VMware vCenter Server Appliance 6.5 (vCSA). This solution currently is a full-fledged alternative to the VMware vCenter for Windows which becomes a thing of the past. For ones who use vCSA not that long, this post provides several procedures which simplify solutions’ daily use. Let’s have a look at how they may come in handy.

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Posted by Alex Samoylenko on November 8, 2017
VMware vSphere APIs for I/O Filtering (VAIO) – how does it work?

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.

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