EMC’s Recoverpoint has always fascinated me. The technology that manages to split writes out and use those to journal these writes and replicate them is awesome technology. Unfortunately as with many cool technology features, it was complex and prone to error if not doen exactly right. Today EMC announced something that makes very cool technology WAY MORE cool: Recoverpoint will sit inside the hypervisor. What you can do then is mind blowing!
A very quick intro into EMC recoverpoint
Recoverpoint is basically a snapshot and replication technology that is independent of the used storage architecture. And much more. And with limitations. Basically Read the rest of this entry »
A very exciting announcement was made at VMworld today: EVO:Rail. I’ve known for a while about this under the codename “Marvin” (and EMC’s appliance related to this codenamed “Mystic”), now it is out there with it’s official naming. But what is it? Disclaimer: I work for EMC, but what I write here are my own opinions.
First things first: A quick intro to hyper-converged
First we had converged infrastructure. Converged infrastructure operates by grouping multiple components together into a single, optimized computing package. Components of a converged infrastructure may include servers, data-storage devices, networking equipment and software for IT infrastructure management, automation and orchestration. VCE’s Vblock is a prime example of converged infrastructure. Below that we have reference architectures like EMC’s VSPEX and NetApp’s Flexpod.
So on to even higher integration and automation: “hyper-converged”. Hyper-converged architectures consolidate and manage compute, Read the rest of this entry »
Oh no. VMware just announced a huge change in names. I know “vCAC” wasn’t the best as in many languages CAC means… well you look it up. But vRealize… Really???
The new names convention: Everything vRealize™
Someone at VMware probably thought this was pretty neat. “Let’s change everything to vRealize™, yeah!!”. I’m not a fan. Well, let’s look at Read the rest of this entry »
Solved: vCAC 6.01 “You cannot perform that action because the system cannot connect to the provider at https://vcacserver:8281/vco/api/”
After a long long rest I dusted off the VMdamentals.com blog site and I’m ready to rock again! This time with an error in vCAC 6.01 that I could not get solved… But finally did
“You cannot perform that action because the system cannot connect to the provider at https://vcac:8281/vco/api/”
This is the error that kept popping up everywhere. As soon as vCAC 6.01 touched vCenter Orchestrator this would Read the rest of this entry »
I recently get more and more into discussions around Software-defined storage and storage virtualization. Is it the same, is it partly the same, is it something totally different? In this blog post I’ll try to shed some light on the technologies of today around these buzzwords and try to make some sense at the same time.
What we used to call virtualizing storage
Before we launched the idea of the Software-defined Datacenter (SDDC) and Software-defined Storage (SDS), we were already putting hardware between storage and hosts creating an abstraction layer between the two. Good examples of this technologies are IBM’s SVC and EMC’s VPLEX.
These technologies look south for their storage requirements, abstract this storage and Read the rest of this entry »
Nowadays the air is filled with the Software-defined Datacenter or SDDC for short. The idea behind this is awesome: As soon as we are able to define and manage compute, storage and networking using software only, we can define, build, scale and destroy virtual datacenters at the press of a button. On top, there’s a web portal. Underneath, there is just a generic x86 hardware platform.
Software-defined compute is something that has been going on for years already. Most vendors that sell hypervisors, especially VMware have a lot of work into the software-defined pillar that is called “compute”.
But when we look at the storage component of the Software-defined Datacenter (often called SDS or Software-defined Storage), things aren’t as advanced as in the compute pillar. Or are they? Read the rest of this entry »
I just got word that I am selected to be vExpert for the year 2013. This is my third year being a vExpert, and I hope to add many more! You can find the list here: vExperts 2013 awardees announced
With that, I feel that I must make a promise to pick up blog posting again. I have a new and shiny homelab, and I have been aching to do more cool deepdive stuff as well as some revisiting (for example – Performance impact when using VMware snapshots is dieing for a revisiting on vSphere 5.1 and vSphere .next – but a lot of work).
Tonight my home-built Nexenta-VM decided to reboot itself during my nightly backup cycle. Not too nice, but it recovered without too much hassle by itself. Even though the NFS shares were available again, my vSphere 5.1 environment now has a pretty large number of VMs that have become grayed out (Inaccessible), even though they are still accessible on the NAS shares. Easily solved, if you know how…
What it looks like
We start with an email I found in my Inbox, stating that my Nexenta-VM had a problem and was rebooted at 1:26AM. After the reboot all the shares became available again, but my vSphere environment was left in a mess: Read the rest of this entry »
After a long time I want to continue my series on building out your own home lab. Up next: Storage. What to choose, how to build it? I will be focussing on building out shared storage in this blog post. Yes you could use local disks just fine without sharing them outside that one box, but that is not where the hard choices lie. Once you decide you want shared storage, the questions start to pop up and decisions have to be made.
Different approaches to storage in your home lab
Before you start buying disks or SSDs, first things first. To begin with it is very important to make some base decisions. Some the most important Read the rest of this entry »
Last week I did a presentation at the Dutch VMUG event around SDDC with a techical focus on the storage bits and pieces you could build inside the hypervisor to accomodate this. I want to share this presentation with you together with a little background on the subject.
Software Defines Virtually Everything
VMware has taken a big step towards the Software Defined Datacenter (SDDC). This is where things are going for sure (also see my related post Cool Tech Preview: VMware’s distributed storage). The idea is that since “everything” runs on x86 anyway, you can potentially run all code on a common platform. From that view, everything will run in software. Read the rest of this entry »