VCAP5-DCA Objective 1.1 vBrownBag

June 22, 2012 in vHersey, VMware

This past Wednesday I presented a ProfessionalVMware.com vBrownBag on Objective 1.1 of the VCAP5-DCA Blueprint. Objective 1.1 covers implementing and managing complex storage solutions. Lots of fun stuff like LUN Masking, SSD Tagging, VAAI, NPIV, Storage Profiles, etc.

I was originally going to cover all of Objective 1 but there is way too much information to cover in an hour so there will be a part II covering more (and hopefully the rest of) of Objective 1 in the near future.

Click here to watch a recording of Wednesday’s vBrownBag covering Objective 1.1 of the VCAP5-DCA Blueprint – http://www.virtualnetworkdesign.com/brownbag/2012-06-20.mp4

Here is the sliderocket slide deck:

During the presentation I had an issue unclaiming the local storage to tag it as an SSD. Still have not figured that out yet. A reboot does cause the claim rules to run and afterwards the local storage is identified as an SSD. Not sure if there is away to unclaim and run the claimrule against local storage to add the enable_ssd option. I could have sworn I was able to do this previously in my lab without a reboot, but I may have been working on a shared datastore and not local storage.

Here are the resource links from the slide deck:

Here is the link to the powershell script that will generate the nice graphs from the vscsiStats histograms – http://www.vspecialist.co.uk/display-vscsistats-data-with-microsoft-chart-controls/ <-This is an AWESOME tool!

And of course some great VCAP5-DCA study guides:

Edward Grigson – @egrigson
http://www.vexperienced.co.uk/vcap5-dca/
http://www.vexperienced.co.uk/2012/04/12/vcap5-dca-whats-new/

The SaffaGeek – @greggrobertson5
http://thesaffageek.co.uk/vcap5-dca-objectives/

There are several other great VCAP5-DCA study guides out there. Feel free to add them in the comments of this post and I will update the slide to add them for future vBrownBags.

Lot of information to cover. Hope everyone enjoyed it and learned something new – I did.

vBrownBag VCAP5-DCA Objective 9

May 24, 2012 in vHersey, VMware

I presented on the VCAP5-DCA Objective 9 – Perform Advanced vSphere Installation and Configurations for the ProfessionalVMware.com vBrownBag on Wednesday, May 23, 2012. The objective covers VMware Image Builder and VMware Auto Deploy.

Below is the recording of the presentations, the slide deck from the presentation, and some Image Builder/Auto Deploy reference links.

There was a lot of information to cover but hopefully this provides a pretty good overview of Image Builder and Auto Deploy that folks studying for the VCAP5-DCA to build on.

Some Image Builder and Auto Deploy links:

 
The ProfessionalVMware.com page for the presentation can be found here: http://professionalvmware.com/2012/05/us-vbrownbag-follow-up-vcap-dca-objective-9-w-herseyc/

Congratulations to @kylemurley who won the copy of VMware vSphere 5 Administration Instant Reference based on his comments on the antique technologies I have in use at my home office. Your book is on the way.

Thanks to everyone that participated in the vBrownBag. I appreciate any constructive comments or feedback.

Masking LUN Being Used as HA Heartbeat Datastore

May 2, 2012 in DCA, vHersey, VMware

Last night I was working through a couple of the storage objectives for the VCAP5-DCA. One of the required skills of blueprint Objective 1.1, Implement and Manage Complex Storage Soltuions, is to understand and apply LUN masking. Jason Langer did an excellent write up on Using esxcli to Mask a LUN from ESXi on his site so I won’t repeat the whole process here but I did run into an interesting issue.

If LUN is being used as a Heartbeat Datastore by HA an error will be produced when trying to unclaim the last path to the LUN.

~ # esxcli storage core claiming unclaim -t location -A vmhba33 -C 1 -T 0 -L 8
Unable to perform unclaim. Error message was : Sysinfo error on operation returned status : Busy. Please see the VMkernel log for detailed error information

The Heartbeat Datastore preferences have to be changed so that the LUN is no longer used by HA before you will be able to mask the LUN from the host.