Nick Gasper

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Homepage: http://www.iphouse.com


Posts by Nick Gasper

Here, There Be Storage Related Dragons…

I’m venturing into territory that I don’t understand; disk scheduling algorithms in Linux. If you know more about this than I then please feel free to disabuse me of any mistaken notions, fundamental errors, or unfortunate statements that I may make in the blog post for future updates. This is something that I barely grasp but I like to explore and learn. So at the risk of my professional pride, and with the help of Wikipedia, here I go!

Changing your disk scheduler on a Linux virtual machine to increase performance.

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The Value and Cost of Persistent Data

I’ve been cleaning out my house recently. There’s a lot of crud that’s just been lying around, collected through years. My wife describes me as a level 2 hoarder; she says that I would be a shoe-in for that A&E show. Going through many, many boxes that I’ve collected in the basement, I pick through each cord and think “I might need that.” I won’t need it though, so with a small mental push, I put it in the trash bag. Persistent data is a lot like that. A lot of companies have, either through policy or inertia, tons of useless information sitting on disks, or tapes, or CDs, that may be useful one day, but probably will not ever be.

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Clone Army

Clone-tastic!

There are many things about virtualization is the ability to clone virtual machines. It’s really cool! Unfortunately, after you work with virtualization for a while you start to take it for granted. I can’t tell you how many times I roll out a new physical machine and sigh because I can’t simply clone it. Well, I can but that’s a discussion for another day.
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FreeBSD 9 and ZFS version 28, THANK YOU!

I’m excited! My favorite operating system, FreeBSD, has gotten an upgrade! There are a lot of small changes but the big one (the one that I’m excited about) is getting ZFS version 28 into the kernel.

ZFS Version 28 adds some of the more important features of ZFS: Deduplication, triple parity RAIDZ3, and RAIDZ. This means that I can have full featured storage devices, running ZFS natively, via FreeBSD.

As a bonus I don’t have to learn Solaris.

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Monitoring, a journey

Or “How I Stopped Worrying and Learned to Love SaaS”

I touched on monitoring in an earlier post but I thought that I would expand on my thoughts.

Let me just get this out there: LogicMonitor (company site) is awesome. It’s not perfect (what is?), but it’s amazing, simple, straightforward, and it works. It combines effective monitoring with graphing (metrics); it’s easy to understand and customize and it works.

Repeat: It works.
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