Chris Wahl of Wahl Network comments: I’ve had a few readers send in questions around their iSCSI network design as it pertains to an ESXi environment. The main confusion is when to use multiple subnets for iSCSI, as opposed to VMkernel binding, based on various vendor documents and best practice guides. Let’s start with what VMware […]
Chris Wahl of Wahl Network comments: A while back, I wrote two posts that discuss Link Aggregation Groups (LAGs) from a positive and negative angle. The idea is that LAGs offer some benefits and drawbacks, and the ultimate decision to choose one over the other should be driven by requirements for the environment. A few […]
Luca Dell’Oca writes in his blogpost: I’ve seen often many users asking in forums how to properly configure a network in order to deploy a iSCSI storage, especially in really small environments. So, I created this post in order to explain how I usually configure a system with an HP StorageWorks P2000 G3 iSCSI storage […]
The virtualization space seems a little light on technical content lately. There are plenty of event announcements and white paper or webinar promotions, but few posts on, you know, how stuff works. Here’s the incomparable Gabrie Van Zanten to change that, with a deep look at iSCSI configuration in VMware. It’s good to see that not everyone has been swallowed up in the lead-generation hype machine!
I have to say, I am quite shocked that I am on the tail end of waiting 1.5 hours for an ESXi 5.0 upgrade to complete booting. Seriouslyâ€¦ 1.5 hours. I have been waiting for some time to get some ESXi 5.0 awesomeness going on in my environment. vCenter has been sitting on v5 for […]
Recently I setup a SAN at my office to handle file sharing and data storage and replace our current file server with a more scalable solution. Getting this configured wasnâ€™t so bad, however getting migrated to the solution is still in the coming â€œsoonâ€ stage of planning.
The news came out this morning that Dell is in exclusive talks to acquire network storage specialist Compellent for just under $900 million. I will leave it to the real reporters to track the ups and downs of the story; what piques my interest is the value Dell gets from Compellent’s technology and the challenge it poses to the data storage industry.
Occasionally, virtualization administrators and/or storage administrators may find it necessary to expand a live VMFS datastore in a vSphere environment. With the use of the new EMC Unisphere client and the vSphere Client, the procedure is extremely easy. Read on for a how-to on extending VMFS datastores in a live environment using the Unisphere client.
â€œConvergenceâ€ is a buzzword seen in the IT press constantly these days. All convergence means is placing communications that used to ride on its own network onto one unified network; Ethernetâ€™s cheapness, ubiquity, and ever-growing link speeds makes it the network everything is moving towards. The first big convergence move was to combine voice networks with data networks, using IP telephony. The challenges of a converged voice/data network include prioritizing voice traffic over pretty much anything else during times of link congestion, and keeping call quality high by delivering datagrams in a predictable time with a predictable gap in between those datagrams.
Unless you’re “in the know”, terms like “layer 2” can seem mysterious, making it all the more plausible when someone touts the benefits. It seems logical: “Bare-metal” communication must be better, faster, and cheaper than higher-level “everything over IP” approaches, right? But it’s not quite that simple.