Search

Educational Episodes: Hyperconverged Infrastructure (HCI)

Featured blog posts

Trending topics you shouldn't miss

All blog posts

Every post, every insight, all in one place
View:
Didier Van Hoye
  • Didier Van Hoye
  • October 12, 2017

SMB Direct in a Windows Server 2016 Virtual Machine Experiment

Ever since Windows Server 2012 we have SMB Direct capabilities in the OS and Windows Server 2012 R2 added more use cases such as live migration for example. In Windows Server 2016, even more, workloads leverage SMB Direct, such as S2D and Storage Replication. SMB Direct leverages the RDMA capabilities of a NIC which delivers high throughput at low latency combined with CPU offloading to the NIC. The latter save CPU cycles for the other workloads on the hosts such as virtual machines.

Read more
Jon Toigo
  • Jon Toigo
  • October 11, 2017

Back to Enterprise Storage

An under-reported trend in storage these days is the mounting dissatisfaction with server-centric storage infrastructure as conceived by proprietary server hypervisor vendors and implemented as exclusive software-defined storage stacks.  A few years ago, the hypervisor vendors seized on consumer anger around overpriced “value-add” storage arrays to insert a “new” modality of storage, so-called software-defined storage, into the IT lexicon.  Touted as a solution for everything that ailed storage – and as a way to improve virtual machine performance in the process – SDS and hyper-converged infrastructure did rather well in the market.  However, the downside of creating silo’ed storage behind server hosts was that storage efficiency declined by 10 percent or more on an enterprise-wide basis; companies were realizing less bang for the buck with software-defined storage than with the enterprise storage platforms they were replacing.

Read more
Andrea Mauro
  • Andrea Mauro
  • 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).

Read more
Florent Appointaire
  • Florent Appointaire
  • October 5, 2017

[Azure Automation] Migrate your scripts to Azure – Part 2

I recently looking for Azure Automation, from top to bottom. It’s why, in the next 2 articles, we will see how to use this tool, from A to Z:

  • [Azure Automation] Interface discovery – Part 1
  • [Azure Automation] Migrate your scripts to Azure – Part 2 (this post)

Today, we will see how to migrate your On-Premises scripts, to Azure Automation.

Read more
Mike Preston
  • Mike Preston
  • October 4, 2017

Accessing esxcli through PowerCLI

Picture this – you are working away developing a PowerCLI script that is performing multiple actions – you have it just about complete when you come to a roadblock.  After frantically googling around you find out that this one task you are trying to perform simply cannot be done through PowerShell, yet you know it exists within the local ESXi esxcli command namespace!  This has happened multiple times to me and thankfully, there is a way to access ESXi’s esxcli command namespace without having to leave the comforts of the PowerShell Console. Chances are that if you have been working at all with ESXi you are familiar with the esxcli command – but for those that aren’t let’s take a quick look at what exactly it does.

Read more
Augusto Alvarez
  • Augusto Alvarez
  • October 3, 2017

Google Cloud Trying to Catch Up: NVIDIA GPUs and Discounts for Virtual Machines

We’ve reviewed several times about the large supremacy around AWS and Azure regarding cloud services market share (more details about recent surveys can be found here: “AWS Bigger in SMBs but Azure is the Service Most Likely to Renew or Purchase”) and Google Cloud lands in third place for most of the services.  Now they are implementing new NVIDIA GPUs for their virtual machines and sustained discounts for customers using the new NVIDIA VMs.

Read more
Alex Samoylenko
  • Alex Samoylenko
  • September 28, 2017

What is Veeam Powered Network (VeeamPN) and why you need it?

This spring, during VeeamON 2017, Veeam Software presented Veeam Powered Network (VeeamPN), their first solution in the field of enterprise networking. Veeam PN is a simple tool for establishing VPN between all parts of a distributed infrastructure: the headquarters, remote and branch offices, employees working remotely, etc. This solution is based on the OpenVPN technology.

Read more
Didier Van Hoye
  • Didier Van Hoye
  • September 27, 2017

The importance of IeeePriorityTag with converged RDMA Switch Embedded Teaming

If you read my blog on Switch Embedded Teaming with RDMA (for SMB Direct) you’ll notice that I set the -IeeePriorityTag to “On” on the vNICs that use DCB for QoS. This requires some explanation. When you configure a Switch Embedded Teaming (SET) vSwitch and define one or more management OS vNICs on which you enable RDMA you will see that the SMB Direct traffic gets it priority tag set correctly. This always happens no matter what you set the -IeeePriorityTag option to. On or Off, it doesn’t make a difference. It works out of the box.

Read more
Sergey Sanduliak
  • Sergey Sanduliak
  • September 26, 2017

Hyper-V VMs on an NFS share on Windows Server 2016 – is that real?

A few years ago, we have tried to place a VM on an NFS share. We used Windows Server 2012 because Hyper-V is a native hypervisor from Microsoft. Now we have decided to reproduce the experiment on Windows Server 2016. Just because of boundless curiosity 😊 So, we have 2 nodes: S3n11 serves as NFS Fileserver and S3n12 takes the Hyper-V server role. We will do exactly the same thing as we did before, but this time on Windows Server 2016 on both VMs. Let’s start!

Read more