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Peter Velikin

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Top Stories by Peter Velikin

IT Dog getting down and dirty today because that’s what it is going to take to deal with the dirty world of “vendor lock-in.”  There is really no way to dress this up and make it smell nice because it just stinks and although I would roll in something this nasty down at the dog park, I wouldn’t want you to have to live with the smell. I read an excellent article by Chris Mellor at The Register discussing the need to develop a standard for the server flash-storage array interface and it really got me thinking about the vendor lock in issue. “What is EMC up to with Project Lightning?” We all are kind of waiting to find that out now aren’t we?  EMC announced Project Lightning as their foray into the server side flash business, putting it sites on the nice people at FusionI/O, STEC and others.  I am wagging my tail to see EMC recogn... (more)

Challenges with SSD Caching: What Challenges?

George Crump from Storage Switzerland recently wrote an article, arguing that it is better to deploy SSDs in a storage array instead of as a server cache.  The article was sponsored by Pure Storage which happens to sell SSD based storage arrays. George identifies challenges with SSD caching and tiering solutions. While some of the topics he raised in the article are valid, he does not present all sides of these topics.  As a result, the article contains positions that overstate the magnitude of the problems and may lead the reader to the wrong conclusion. I would like to present ... (more)

Is Your Data On “The Highway To Hell”?

Please forgive the IT Dog  for channeling a little AC/DC today.  I needed some way to get ‘highway’ and ‘data’ in the same sentence and you’ll see in a minute why ‘Highway to Hell’ is appropriate here. I was reading a blog on the Nevex website regarding block-based vs. file-based caching and the author started using a “highway full of cars” as an analogy for moving data around.  So, I decided to run with this highway imagery and explain how doing file-based caching is like putting your data on the 405 freeway at LAX, 5 pm on a... (more)

Effects Of Linux IO Scheduler On Intel X25-V SSD Performance

This blog is the second in a series which present test results of testing performed at Velobit to investigate the effects of the Linux IO scheduler on SSD performance when SSDs are operated in a simulated enterprise environment.  The test set up and procedure is documented in the first blog post of this series which can be found by clicking here. Test SSD: Intel X25-V SATA based SSD Figure 1: IO Scheduler Bandwidth for Intel X25 Drive: a) random read b) sequential read Figure 2: IO Scheduler Bandwidth for Intel X25 Drive: a) random write b) sequential write Figures 1 and 2 shows th... (more)

Introduction to Virtual Desktop Infrastructure (VDI)

This blog starts a series of blogs we will post regarding Virtual Desktop Infrastructure or VDI.  To directly quote wikipedia "VDI is a desktop-centric service that hosts user's desktop environments on remote servers and/or blade PCs, which are accessed over a network using a remote display protocol."  Basically, VDI means a user can access their desktop from any terminal device capable of running the remote display protocol.  Further, VDI runs a complete implementation of a typical desktop OS (e.g., Windows XP, Windows 7, etc.) as a virtual machine on the host server.  There i... (more)