Full or Thick Provisioned Volume on Compellent

Introduction

There are pundits out there that claim that you cannot create a fully provisioned LUN on a Compellent SAN.  Now that what I call unsubstantiated rumors, better know as bull shit.

Sure the magic sauce of many modern storage array lies in thin provisioning. Let there be no mistake about that. But there are scenarios where you might want to leverage a fully provisioned volume. This is also know a s thick provisioned LUN. You can read about one such a scenario where they make perfect sense in this blog post Mind the UNMAP Impact On Performance In Certain Scenarios

Create a  Full or Thick Provisioned Volume on Compellent

First of all you create brand new volume in the Storage Center System Explorer. That’s a standard as it gets.

You then map this volume to a server

At that moment, before you even mount that volume on your server let alone do anything else such a bringing it on line or formatting it you’ll “Preallocate Storage” for that volume in Storage Center.

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You’ll get a warning as this is not a default action and you should only do so when the conditions of the IO warrant this.

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When you continue you’ll get some feedback. This can take quite some time depending on the size of the volume.

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When it’s done peek at the statistics of that full or this provisioned volume on the Compellent.This is what it looks like when you look at the statistics for that volume after is was done. So before we even formatted the volume on a server and wrote data to it. It’s using all the space on the SAN for the start.

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Due to data protection it’s even more. It’s clear form the image above that a 500GB disk in RAID 10 fully provisioned is using 1TB of space as its all still in RAID 10 (no tiering down has occurred yet). Raid 10 has an overhead factor 2. The volume is for a large part in Tier 2 because my Tier 1 is full, so writing spilled over into Tier 2.

Now compare this to a thinly provisioned volume that we just created and again we haven’t even touched it in any other way.

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Yup, until we actually write data to the volume it’s highly space efficient, there is absolutely no spaces use and we’ll see only a little when we mount, initialize the disk in Windows, create a simple volume and format it.image

This is completely in Tier 2 and my tier 1 is full. I accept donations of SANs and SSD’s for my lab it this bothers you Winking smile. When we write data to it you’ll see this rise and over time you’ll see it tier down and up as well.

Post MVP Summit – Back to reality

Coming home after the MVP Global Summit is a moment of reflection, or better the trip home is. The Summit is a time of intense interaction with peers who are very varied bunch of experienced technologists. Next to their hands on Microsoft stack expertise they also bring their experience with other technologies and companies. This gives us the opportunity to talk to each other and exchange knowledge and views. Poor in the feedback and the discussions with the Microsoft Program Managers and their management. This goes on from sun rise to sunset. It pays to come early and stay an extra day. It opens time for more meetings and discussions in and around Redmond.

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The end result is a truck load of information and impressions we need to parse. That can take some time. And we need to filter our conclusions for our management. The content of the MVP Summit and all talks around it are strictly NDA. The insight and ideas we harvest from that we can leverage, but we cannot expose the information.

On Microsoft’s side they get a reality check, open and honest feedback, they get our opinions and ideas. They learn about our successes and challenges in the real world. If that was not helpful to them they wouldn’t want us to show up on their campus disrupting their work week.

To me it’s also a reality check. What am I doing. How am I doing that and why? Even more importantly where am I doing this things and is what I use the best choice. It show my own strengths and weaknesses. That’s valuable as well.

Well the good news is that judged by some requests and opinions of my peers I’m an valued expert and architect. I do have some weaknesses but I’m on track to address those. The balancing act here is that we have to avoid wasting time on dying opportunities that are sill needed but are heading down hill fast. Not as much due to the technology being obsolete or no longer needed but mostly due to politics and a bad understanding on how to deliver IT cost effective and efficiently. The amount of self inflicted wounds and pain can be shockingly high. The trick is to avoid those projects as that’s wasted time, time that should be spent on moving forward. Sometimes this looks like the nineteen nineties all over out there.

One thing is very clear. Those that seek a single solution, a one size fits all approach, just for the sake of simplicity or perceived economies of scale will fail. A bipolar approach without a place for the vast amount of “stuff” in between, let alone a realistic and sound technical plan to integrate it all are going to fail. Ask any plumber Winking smile. Learn how to think independently and don’t grow too dependent on industry analysts. Do what’s right for your needs.

Heading to the MVP Global Summit 2016

It’s that time of the year where I’ll be making my way to Redmond (Washington, USA) to attend the MVP Global Summit 2016.

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It’s going to be and interesting one as after 2 years of Technical previews Windows Server 2016 went RTM  last September and is generally available. Our hardware partners are selected for best value and that means early and good support for new releases of Windows. Dell, Emulex, Intel and Mellanox delivered and that means we can already share our first real life experiences around the finished product with Microsoft.

We’ll also be talking shop about future directions and provide feedback on what we want to see happen and need. Next to Windows (which is so much more than “just” an operating system nowadays) we have a stake in SQL Server  2016 and Azure. Azure in all it’s offerings, SAAS, PAAS, IAAS – both public and hybrid use cases.

To do so we need to get there first so we’ll hop on a Boeing (hey I’m flying to Washington, kind has to be a Boeing right?) for long haul a flight to Redmond and go talk shop all week long from early dawn at breakfast to night caps in downtown Bellevue with friends and colleagues.

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Next to pure technology we also talk about business challenges and opportunities. The best positioned organizations are the ones where the technical people have taken and been given the opportunity to lead. I know it’s scary for some managers that feel threatened by this but when the techies lead the IT side of the business the rest can can focus on the business and avoid the costly mistakes that I see so many make today. Most organizations have failed at getting business people up to speed on IT. I’ve seen a lot of successful organizations let technical people show how the business how to thrive in a mobile and cloud first world. It just makes sense to let your experienced and talented technical people take the lead. Don’t think for one second that they’re just janitors mopping the floor in an outdated server room when not busy handling the “other” facilities. Do that and you will fail painfully. Put away your politics, fears, long term gigantic projects and learn to let fast, inexpensive, simple, small technology solution rule in a federated world to maximize time to market, results and flexibility. If you don’t let go of centralized, long term, overly complex technology projects and old school enterprise solutions – where everything is held by back by everything else – you’ll fail, lose vast amounts of money and time. Don’t!

VeeamOn 2017 Call for Presentations

Veeam will be holding its annual conference VeeamOn 2017 in New Orleans, Louisiana on May 16th – 18th. You can actually already pre-register for the conference today. Just follow this link. This qualifies you for a 200$ discount.

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But don’t stop there. When you work with Veeam products you might have some interesting solutions and experiences to share. Maybe you got creative and designed a smart solution to you needs. That’s something that can inspire people to think about how they use the products. So please, don’t be shy. Consider submitting your proposal for a presentation at VeeamOn 2017. Help your peers to achieve their needed availability in an always-on world. Go to https://www.veeam.com/veeamon/call-for-presentations and share your experience, knowledge and insights.

I hope to see you there to learn form and be inspired by you, my peers and colleagues from all over the world!