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Peter Velikin

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Top Stories by Peter Velikin

This blog begins a series of blogs which present test results of testing performed at VeloBit to investigate the effects of different Linux IO scheduler algorithms on IO bandwidth when SSDs are operated in a simulated enterprise environment. This series of blogs is similar to the series we previously presented documenting IO bandwidth vs. read/write ratio. This first blog will document the test set up and procedures and present the results from one tested device. In following weeks, I will refer the reader back to this blog for test set up and procedure information and simply present the results for another device. After presenting results of a particular week, I will make observations as appropriate. Test Motivation and Procedure For this group of tests, we wanted to focus on the effect of the selected Linux IO scheduler on the IO bandwidth performance of the SSD. An ... (more)

Don’t Buy RAID cards for SSD Caching

“Where have you been Dog?” The IT Dog here again, back from summer sabbatical. Well, it was more like an “election” sabbatical since I spent the last six months working on the campaign to elect Barkington T. Howl, III as President of United Dogs of America (UDA). “Bark,” as his frat brothers call him, turned out to be a little too high-brow and out of touch with the rank-and-file UDA constituency. He lost in a landslide. Anyway, I am now back at my day job, talking about SSDs in the IT marketplace. Did you miss me? Back to Our Regularly Scheduled Blog Topic So what is the first th... (more)

How to Successfully Deploy SSD in the Enterprise

Register > Solid State Disk (SSD) technology is one of the hottest IT areas in 2012. The promise to eliminate storage IO bottlenecks and increase application performance, enable server virtualization, enable data center growth, and reduce IT costs has prompted 83% of all IT departments to consider SSD. But those planning an SSD deployment face a variety of deployment choices. Moreover, choosing poorly can yield large expense, disruption to existing IT environments, and a complex new set of storage management tasks. Join Brian Garrett, Vice President at the Enterprise Strategy Gro... (more)

Apple iMac Fusion Drive SSD

iMac Tastes Sweeter With SSDs Last October, Apple made the requisite splash with their iPad mini announcement.  That same day they rolled out the latest iMac platform with not as much fanfare since the iPad mini was the star of the day.  Deep into the press release announcing the new iMac was a paragraph touting Apple’s “innovative new storage option called Fusion Drive”.  Fusion Drive….Hmmm, wonder what that is all about? Not calling an SSD an SSD The Apple announcement says their Fusion Drive combines “128 GB of flash with a standard 1T hard drive.”  The blogoshere went into hyp... (more)

Using RAM in SSD Caching

Dr Dog Says “You Need More RAM In Your Cache Diet” Well, I am not really a doctor, but I play one on TV. You may remember (if you are old enough) that line from the 1986 Vicks-44 TV commercial.  Anyway, while I may not be a real doctor, I can certainly tell you about why you need more RAM in you cache diet. “I Think My Cache Diet Is Great” If you were happily running your IT system but needed some additional performance, chances are you turned to some kind of SSD caching solution to improve performance at a lower cost point than adding more servers or storage. You went on what I a... (more)