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3PAR Hands on lab: zero detect

CartoonCalvin100X100.JPG By Calvin Zito, @HPStorageGuy


A few weeks ago I did a blog post that included video from a hands on lab I did with HP 3PAR.  That video focused on provisioning.  Today I continue with that hands-on-lab and will show the how Zero Detect works with our 3PAR array.  I had a vague understanding of Zero Detect before I did this lab but doing the lab and now watching the video again has really helped me to understand it. 


While I want to focus this post on the video demo, I found this in a white paper that talks about the HP 3PAR integration with VMware:


In a perfect world, all storage would start thin with HP 3PAR Thin Provisioning Software. However, it is never too late to become more efficient, which is why HP 3PAR also gives you the ability to “thin” existing volumes using HP 3PAR Thin Conversion Software, and to keep them thin over time using HP 3PAR Thin Persistence Software. HP 3PAR’s unique Thin Built In(TM) technology is a hardware capability built into the HP 3PAR Gen3 ASIC which provides an efficient, silicon-based zero-detection mechanism for converting traditional “fat” volumes to more efficient “thin” volumes on the HP 3PAR without performance impact.


This hardware capability leverages HP 3PAR’s own “Thin Engine”—a software-based virtualization mapping engine for space reclamation—which gives HP 3PAR arrays the power to remove allocated but unused space in existing volumes.


Together with VMware Storage vMotion(TM) or any standard data migration utility, HP 3PAR Thin Conversion Software uses the zero-detection capabilities of the HP 3PAR Gen3 ASIC to convert “fat” volumes to “thin” volumes by identifying unused space (i.e., zeros) in the volume. The conversion relies on the virtualization mapping capabilities of the HP 3PAR Thin Engine to eliminate the need to store any of the volume’s unused space. Through this process, users can migrate from “fat” volumes on any other storage array to “thin” volumes on HP 3PAR Utility Storage to gain the benefits of HP 3PAR Thin Provisioning Software.


Here's the video - you might click on "Watch on YouTube" and play the HD version as you'll be able to see the GUI much better.





With VMworld 2011 less than two weeks away, I'd encourage to look at this technical white paper that talks about the integration with 3PAR and VMware.  It's a great paper to help understand why HP 3PAR is so ideally suited for virtualization and cloud environments - and we'll have more to say about that in the near future!


One last resource - we have a webinar on Thursday August 25th at 9 AM PDT.  This should be very good with leading industry analyst from ESG Mark Peters.  I had one of the nicest dinners ever with Mark last year at an India resturant in London.  The session is titled the Benchmark for Tier 1 Storage in Virtual and Cloud Datacenters and I'm guessing you might hear more about HP 3PAR in that webinar.


You can register for this session (or watch a replay of it after Augst 25th) by clicking here.

Derek | ‎08-18-2011 03:32 AM

A while back I blogged about some VAAI write-same results combined with the zero detect when creating EZT VMDKs. Very impressive results! 10GB (Bytes, not bits) a second for EZK VMDK creation.

| ‎08-21-2011 07:44 AM

Wow - very impressive results!  Thanks for pointing to it Derek!

HarryrBorbag | ‎08-24-2011 05:27 AM

Can anyone point me somewhere where I can get some how to's for 3PAR? I've just been given one to manage but don't know much about it. I've successfully added some hosts and provisioned some storage, but need some best practice tips and tricks, and how i should do things the 3PAR way. ie like Dynamic Optimization. eg I can't see anywhere to configure this in the the InForm Management Console?

| ‎08-24-2011 08:13 PM

Harry - we are in the process of moving a lot of the 3PAR documentation that was previously only accessible to 3PAR customers who had a log-in on legacy websites to  That should happen early next week.  Once there, here's how do get to the right place:

> Go to

> Select the product you want documentation for (toward the bottom of the page you'll see the choices)

> Click on "Support for your product" and then "Manuals".  There you should be able to find what you need. 


Again, should be there early next week. 


Here are a couple of other things in the short term:  HP 3PAR Architecture technical white paper andGeneral Search for 3PAR documents on (NOTE: User manuals won't show up here)


Hope that helps!

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