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Peter Velikin

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Latest Blogs from Peter Velikin
Hey there; the IT Dog back with some color commentary on our VDI experience. When I first heard the name, I thought VDI was the latest model Volkswagen diesel, but as the guy with the suit explained in the last blog, VDI is Virtual Desktop Infrastructure. Now that you know what VDI m...
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 di...
What To Expect When Flash Stops Flashing We all know that SSDs are made up of NAND-Flash memory chips and that flash memory eventually will wear out.  So, to prepare for the inevitable, we offer you a little up front advice on what to expect when your flash stops flashing. What’s ...
Well, we may have recently avoided the ‘fiscal cliff’ in Washington DC, but some cliffs cannot be avoided.  Just ask Norm of the TV show “Cheers” how many times he wished he could avoid Cliff Clavin.  In the world of SSDs, the cliff that we want to avoid is the SSD “write cli...
File System Alignment for SSDs There are many techniques and methods that can be used to tune an IT system to improve overall system performance.  SSD caching is widely being used as a low cost, easy to implement method to quickly increase performance with little or no impact on ...
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...
At Velobit, we are lucky to be in the position to talk to many experienced SSD users to discuss real world issues with SSD integration and operation. We have just as many conversations with some not so experienced folks who are just beginning the investigation/search/selection process ...
“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 br...
While it's conventional wisdom that SSD prices are falling, the reality may change soon. The DigiTimes reports that the price of NAND flash memory, which is a large component in SSDs, rose significantly in the second half of September. The article attributes the price in...
The release of VeloBit version 1.0 seems like just the other day, but we’re already close to releasing version 2.0. So we’re starting enrollment for our beta program. Here’s why interested IT folks like you would want to enroll in it: No-cost use of the VeloBit HyperCache beta product...
Wouldn’t it be amazing if your phone intelligently changed your “Favorites” list based on where you were and who you were calling? In the first part in this series, I explained how the compression capabilities of Content Locality Caching could improve your smartphone’s “Favorites” cont...
We test the performance of our SSD caching software constantly using various Solid State Drives in the VeloBit lab. So when an SSD acts strange, it throws off our testing and merits some investigation. We recently encountered inconsistent and low performance with the relatively new OCZ...
Introduction Imagine if your smartphone’s “Favorites” contact list predicted who you were going to call, held more relevant contacts, and updated the list automatically based on what you were doing. You wouldn’t have to go into your full address book nearly as o...
This blog concludes the a series which present test results of block size and outstanding IO request size on SSD IO bandwidth.  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: OCZ Vertex 3 120 GB SATA ...
This blog continues the a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 wh...
This blog continues the a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 wh...
Yesterday Fusion-io announced a feature in their SDK that enables programmers to use a PCIe flash drive to virtually extend a server's main memory. Essentially it bypasses the OS and makes the system believe that the flash drive is actually DRAM memory. (You can read more here: http://...
This blog continues the a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 wh...
I wear many hats at VeloBit, one of which is to manage the production and development lab environment for our engineering team. This means that I face the same basic challenge that all sysadmins face: growing capacity requirements and a set budget to work with. Luckily, I have an ace u...
This blog continues the a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 wh...
This blog continues the a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 wh...
This blog begins a series of blogs which present test results of testing performed at Velobit to investigate the effect of block sizes and outstanding IO requests on IO bandwidth when SSDs are operated in a simulated enterprise environment. This series of blogs is similar to the series...
The IT Dog here barking about Linux and what can happen if you are not careful with how you manage device naming.  I’m talking about all kinds of hardware Linux sees in your system when it boots up – disk drive partitions, SSDs and even USB and camera devices.  If...
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 ...
SSDs are being used in many applications in IT systems for both caching and primary storage. Regardless of what SSDs are being used for, how they are used matters greatly. Because of the characteristics of the NAND-based flash devices in SSD, writing data to SSDs must be carefully mana...
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 serie...
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 Neve...
The release of VeloBit HyperCache v1.1 is a major milestone and celebration for VeloBit and our customers, partners and investors. I’m pleased with the response we’ve received, and especially proud of our team. I like to pause and reflect at major milestones. This blog shar...
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 am calling a “cache diet” (no, not the “cr...
The IT Dog is waggin’ his tail today with this one. I love progress and the SSD revolution is certainly pushing the storage industry forward on many fronts. New products with SSD in every segment of the IT data chain from the server side SSD to SSD raid storage. SSD capabilities has...
In large scale data storage systems, maximizing system utilization is essential to ensure sustained and reliable system performance.  Over-utilization can lead to IT managers thinking they need to expand their system, adding cost and complexity.  One way to decrease utilizati...
CPU cache is a commonly used method for improving processor performance by reducing the access time to memory.  Typically a CPU can have both an instruction cache to prefetch processor instructions and a data cache to speed up access to a requested piece of data.  Here, I am ...
Disruptive technology is a term used to describe an idea or invention that typically disrupts an existing market, often completely displacing an earlier technology. Sometimes disruptive is great (e.g. digital cameras and cell phones), and sometimes disruptive is not so great (e.g. las...
This blog continues the series which present results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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...
SSD IO Speed vs. Read/Write Ratio - Intel 320This blog continues the series which present results of extensive testing performed at Velobit to investigate SSD IO bandwidth when SSDs are operated in a simulated enterprise environment.  The test set up and procedure is documented in...
IT Dog back again to talk a little about the “Solid State” part of SSD.  While the term “Solid State” may sound like the nickname for some big university in Ohio, solid state electronics really refers to any electronic component or device manufactured from ...
Another Reason Why SSDs Are Not HDDsIt is fairly common knowledge that SSDs differ from HDDs in many ways.  SSDs have faster IO, have no moving parts, use less power and cost more money per gigabyte.  There are other, more subtle differences between the two storage devices an...
This blog is the third in a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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...
Virtualization has been used for many years to maximize the usage and value of installed server hardware. It allows resource sharing of single computer among many users through virtual machines (VM) that are securely isolated and highly reliable. In recent years, companies like VMware ...
This blog is the third in a series which present test results of extensive testing performed at Velobit to investigate SSD IO bandwidth 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 ...