VAAI support in vSphere Standard and up as of 6.0!

After some internal discussions over the last months it was decided to move VAAI (vSphere APIs for Array Integration) and Multi-Pathing down to vSphere Standard as of 6.0. Main reason for this was that Virtual Volumes, by many considered as the natural evolution of VAAI, is also part of vSphere Standard. So if you have vSphere Standard and a VAAI capable array and looking to move to 6.0, make sure to check the configuration of your hosts and use this great functionality! Note that VAAI did indeed already work in lower editions, but from a licensing point of view you weren’t entitled to it… I guess many folks never really looked at enabling / disabling it explicitly, but for those who did… now you can use it. More details on what is included with which license can be found here:

VAAI support in vSphere Standard

This host currently has no network management redundancy

Bumped in to this a billion times by now, and I wouldn’t recommend applying this in production but for your lab when you need to take clean screenshots it works great. I’ve mentioned this setting before but as it was part of a larger article it doesn’t stand out when searching so I figured I would dedicate a short and simple article to it. Here is what you will need to do if you see the following message in the vSphere Web Client: this host currently has no network management redundancy.

  • Go to your Cluster object
  • Go to Settings
  • Go to “vSphere HA”
  • Click “Edit”
  • Add an advanced setting called “das.ignoreRedundantNetWarning”
  • Set the advanced setting to “true”
  • On each host right click and select “reconfigure for vSphere HA”

This is what it should look like in the UI:
This host currently has no network management redundancy

You can also do this in PowerCLI by the way, note that “Stretched-Bluefin-Frimley” is the name of my cluster.

New-AdvancedSetting -Entity Stretched-Bluefin-Frimley -type ClusterHA -Name "das.ignoreRedundantNetWarning" -Value "true" -force


Deploy VCSA 6.0 firstboot error

I was doing some tests in my lab and while deploying a new VCSA 6.0 I received an error that firstboot was unsuccessful. Not really a great error message if you ask me but okay. I had already validated DNS twice before I got started, but I checked it again just in case… DNS was all good, what else could it be? Figured NTP could be another problem and my friend William Lam confirmed that. I checked the host if NTP was configured and it was not for some reason. So I configured NTP on my ESXi hosts which was straight forward, but what about the VCSA I had deployed? Also not too complicated, I logged in via SSH and did the following:

  • ntp.get
    Will show “Status: Down”
  • ntp.server.add –servers
    This configures VCSA to fetch the time from ntp server to
  • timesync.set –mode NTP
    Make sure that the time sync is set to ntp
  • ntp.get
    Should show “Status: Up”

That should do it… By the way, you can simply check “resolv.conf” for DNS to see how it is configured today, also look at “hosts” for the host name etc.

VMworld voting has started…

Every year a percentage of VMworld sessions is selected based on community voting. This voting process has started this week and as I submitted a couple of sessions myself I would like to draw some attention to them and ask you to consider voting for them… that is, if you like the session of course. Below you can find the details of the two sessions I personally submitted. Just login and do a search on the session ID which is in bold below

  • Frank Denneman and Duncan Epping – Five Functions of Software Defined Availability (4535)
    In this session Frank and Duncan will discuss 5 functions of Software Defined Availability, which are part of vSphere 6.0. For each of these functions certain scenarios will be discussed to explain how vSphere can help improving availability of your workloads. This ranges from “how Site Recovery Manager and Storage DRS are loosely coupled but tightly integrated” with vSphere 6.0 to “how vSphere HA responds in the case of a certain failure”. Be prepared to get in to the trenches of workload availability…
  • Lee Dilworth and Duncan Epping – Five Common Customer Use Cases for Virtual SAN (4650)
    In this quick talk Lee Dilworth and Duncan Epping will discuss the five most common use cases seen within the Virtual SAN install base. This session will not just focus on the use case but also include some common hardware configuration details to provide a better understanding of the flexibility which Virtual SAN offers.

Lego Datacenter

I am at a VMware R&D offsite this week and I saw an awesome thing I wanted to share (unfortunately the only thing I can share). Our architecture team had a booth which displayed a datacenter created from Lego. Yes someone spent some serious time building this during the weekend considering the detail that went in to it. Awesome work Amy and great way to kill some time I guess 😉