Free Webinar
May 2 | 11am PT / 2pm ET
Are you interested in storing backups in the simplest and cost-effective way?
Please meet, Wasabi!
Speaker: Oleg Pankevych, Pre-Sales Engineer, StarWind
Andrea Mauro
Andrea Mauro
Virtualization expert and architect, System Administrator on Linux and Windows OS, network and storage specialist. Holding multiple technical certifications from VMware: (VCDX3, VCDX4, VCDX5-DCV, VCAP4-DCA, VCAP4-DCD, VCAP5-DCA, VCAP5-DCD, VCAP6-DCD, VCAP5-DTD, VCAP5-DTA, VCAP5-CIA, VCAP5-CID, VCIX-NV, VCIX6-DCV,VCP3, VCP4, VCP5-DCV, VCA4-DT, VCP4-DT, VCP5-DT, VCP6-NV, VCP5-Cloud), Microsoft (MCP, MCSA, MCSE, MCTS, MCITP), Citrix (CCA, CCSP). VMware vExpert from 2010 to 2016, Microsoft MVP 2014-16 (on Hyper-V), Veeam Vanguard 2015-2016.

All posts by Andrea Mauro

Posted by Andrea Mauro on March 14, 2019
Storage Controllers in VMware vSphere

Storage controllers are virtual environment tools essential for locating and accessing both block-based devices and SCSI devices. Storage controllers in VMware vSphere virtualization platform can operate with different storage controllers, varying in types, purposes, and usages. A wide range of functional capacities allows you to establish storage controller compatibility, choose configurations, and process SCSI emulation and paravirtualization. Use a storage controller as best suited for your preferred OS!

Learn More

Posted by Andrea Mauro on February 21, 2019
Changing the hardware resources on a running VM

Each virtual machine (VM) is a collection of resources provided by the infrastructure layer, usually organized in a pool of resources and assigned dynamically (or in some case statically) to each VM. VMs “see” a subset of physical resources in a form of virtual hardware components defined usually by the certain minimum elements. Adding hardware components can be useful in some cases, or they can be necessary for performing some basic operations, like, for example, installing the guest OS where a video driver, a keyboard and a mouse device are needed to use the remote console. That is why you should be aware of which hardware resources can be hot-add and which hot-remove.

Learn More

Posted by Andrea Mauro on November 6, 2018
VMware vCenter and PSC topologies

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.

Learn More

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.

Learn More

Posted by Andrea Mauro on May 8, 2018
Why upgrade to VMware vSphere 6.7 (or why not)

Now that VMware vSphere 6.7 has been announced and it’s also available in General Availability (GA), some people may ask if it makes sense upgrade to this version (or when will make sense upgrade to 6.7). Is a GA release ready for a production environment? Or is it mature and stable enough?

Learn More

Posted by Andrea Mauro on May 1, 2018
Using PowerShell on Linux

PowerShell is a command line (CLI) scripting language developed by Microsoft to simplify automation and configuration management, consisting of a command-line shell and associated scripting language. It’s a (huge) evolution (or better a revolution) from the original DOS batch language (still supported in latest Windows OS with the cmd.exe command), and it’s really better compared to the different previous attempts to replace the batch language (like Windows Script Host).

Learn More

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.

Learn More

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?

Learn More

Posted by Andrea Mauro on October 10, 2017
The dark side of converged storage networks

The fabric of SAN (means Storage Area Network) with Fibre Channel solutions have always been a dedicated network, with dedicated components (like FC switches). But, starting with iSCSI and FCoE protocols, the storage fabric could now be shared with the traditional network infrastructure, because at least level 1 and 2 have a common Ethernet layer (for iSCSI also layer 3 and 4 are the same of TCP/IP networks). Hosts (the initiators) in a converged network use typically Converged Network Adapters (CNAs) that provide both Ethernet and storage functions (usually FCoE and iSCSI).

Learn More

Posted by Andrea Mauro on June 7, 2017
Design a ROBO infrastructure. Part 4: HCI solutions

As written in the previous post, for ROBO scenario the most interesting HCI (Hyper-Converged Infrastructure) configuration is a two nodes configuration, considering that two nodes could be enough to run dozen VMs (or also more). For this reason, not all hyperconverged solutions could be suitable for this case (for example Nutanix or Simplivity need at least 3 nodes). And is not simple scale down an enterprise solution to a small size, due to the architecture constraints.

Learn More