Home | Virtualisation


vSphere vDS SPAN port with Wireshark in 2 minutes

vDS SPAN port with Wireshark-v0.6

I often find myself searching for facts to dispel “hearsay” and guesswork in troubleshooting discussions between the Network and Windows VM teams.  This article is intended to show just how straightforward it is to use the VMware distributed switch SPAN port capability, to put a virtual sniffer on a virtual port on a virtual distributed switch. RSPAN and ERSPAN – ... Read More »

2014 in Review


As we approach the start of a new working year, it’s time to take the almost traditional and obligatory review of the year hence.  So, what made the news and how does that provide us insight on the year to come? Big Trends There were certainly some interesting developments in storage and the wider IT arena.  Containers repopularised by Docker ... Read More »

NetApp Integrated EVO: RAIL – A Triumph of Marketing Over Common Sense


I suspect I wasn’t the only one last week who was scratching his head at the latest idea from NetApp which sees them offering a VMware EVO: RAIL solution that incorporates Data ONTAP filer technology.  In case that last statement is unclear to you, yes, NetApp are suggesting that EVO: RAIL, the solution that uses VSAN and commodity disk to ... Read More »

VSAN, VSA or Dedicated Array?


I don’t normally write blog posts that follow up on other people’s discussions however having seen some of the tweets relating to Nigel’s blog post on VSA versus VSAN, I realised my comments on the subject would stretch to an entire post of their own.  So here it is. The discussion (although I haven’t listened to the podcast) revolves around ... Read More »

VMworld 2014: VAIO – vSphere APIs for I/O Filtering


One of the more interesting announcements at VMworld 2014 this year was a technology called VAIO or vSphere APIs for I/O Filtering.  This new feature was detailed in session TEX1492 (although I didn’t see it) and will allow 3rd party vendors to insert code in the form of a filter driver and deployed as a VIB that can be used ... Read More »

Why Have VVOLs Taken So Long to Deliver?

VMworld 2014

Another VMworld has come and gone and still we haven’t seen the production deployment of VVOLs.  Just to recap, VVOLs are the evolution of the packaging of virtual machines that currently reside in data stores.  The main benefit is to be able to apply storage performance and availability policies to a VM object rather than an entire datastore as we ... Read More »