Barry Whyte is a 'Master Inventor' working in the Systems & Technology Group based in IBM Hursley, UK. Barry primarly works on the IBM SAN Volume Controller and Storwize family of virtual disk systems. Barry graduated from The University of Glasgow in 1996 with a B.Sc (Hons) in Computing Science. In his 18 years at IBM he has also worked on the successful Serial Storage Architecture (SSA) and the IBM DS8000 range. Barry joined the SVC development team soon after its inception and has held many positions before taking on his current role as performance architect. Outside of work, Barry enjoys playing golf and all things to do with Rotary Engines. All posts on this blog are (c) Copyright International Business Machines 2014 - reproduction without prior approval is prohibited.
Seems like a lot of water, in the case of Farley and Burke - a lot of smack ups - but it feels like smack downs to me... ;) has gone under the bridge.
Looking back at my first part work, some 24 months ago, it would look like Invista was still maybe being banded about as a 'serious' option, and... [Continue Reading]
I thought it was worth spending a few minutes describing a feature that SVC has been supporting for
just over a year now. Call it what you want, "Split Cluster", "Split I/O Group", "Hyper-swap", "Pork"
(Sorry HAM). After HDS made such a wet fish splash... [Continue Reading]
As we approach SVC's 6th birthday its interesting to see the rest of the industry starting to catch up and realise not only that a modular commodity storage controller is the way forward, but that also clustering of said modular controllers has many benefits. We all await todays announcement of HDS... [Continue Reading]
Funny, I had been thinking about blogging about a customer visit I had this week, primarily a new SVC user wanting to discuss and go into some deeper technical insight into the product. I enjoy these days as its a chance to talk techy with someone who is actually using and hopefully benefiting from... [Continue Reading]
Is it me? I was wondering, but I was glad to see 'the bod' agreed with me. SAN Virtualization, now I'm sure Cisco would claim the term, VSAN's, logical abstractions etc etc. Storage Virtualization, thats what I do for a living, thats what our customers know they are buying when they implement an SVC... [Continue Reading]
Edited to clarify a few points 23/7 I was catching up on a few interesting comments on BarryB's post about the evolution of DMX - notice how he deftly ignored my loaded questions about host side IOPs / MBs - but then we all know EMC, for some reason, just won't publish any kind of yardstick for... [Continue Reading]
I thought after the 4.3.0 release I'd have a bit more spare time to post more often, however I'm working on a couple of interesting projects that have really taken off over the last few months and I'm once again flat out, not to mention being asked to start benchmarking things already waiting to be... [Continue Reading]
So I almost 'did a Tony' just now, spraying my coffee over my screen and keyboard. The reason for this, the recent post from Hu over at HDS. (Its been a while since I even bothered to read his posts, and even longer since I commented on them... I think I can see why Hu no longer 'interacts' with his... [Continue Reading]
Its been a while, and recently I've not had the time or inclination to comment about Hu's blogketing, but a few of us found his recent post amusing. (As we often do) I guess Hu has a dilemma . On the one hand he's been telling us for a couple of years that Storage Virtualization in the array is the... [Continue Reading]
Since the explosion of interest in Host based virtualization products like VMware, Zen and Microsofts Hyper-V, it seems like the IBM concept from the 70's mainframes has really hit home. I remember sitting in on a very early customer focus group when we are mid-development of SVC and the speaker was... [Continue Reading]
So I'm still on holiday, but while getting myself prepared for the final stage of the re-decoration efforts at home I was browsing while having my morning intake of caffeine and came across an interesting viewpoint reported at Blocks and Files claiming that HDS are the #1 in storage... [Continue Reading]
One of my regular blog stops is over at Techworld where Chris Mellor discusses all things storage. I spotted an interesting post from Chris today comparing SVC to USP and coming up with the conclusion that the two are almost the same in what they can achieve, what they do and at a 40,000ft view, how... [Continue Reading]
I can't help it. It seems that every post that Mr Yoshida makes strikes me as being somewhat questionable. I have much respect for how long he has been in the blogging game. I have no respect for his lack of reader comment acceptance - I've long since given up replying as he decides to ignore those... [Continue Reading]
There is a big difference to "in the switch" network based storage virtualization and "appliance" network based storage virtualization. Hu Yoshida and Dr. Kevin McIsaac, seems to have forgotten that in my comparison series of the three approaches to storage virtualization, both the appliance and... [Continue Reading]
I promised a bit more detail on the very limited sample set used by EMC's latest blogger Dr Kartik , in response to his analysis that SPC-1 IOPs is directly proportional to the number of drives used by the system under test. So I cannot deny the fact that : larger number of drives = larger IOPs... [Continue Reading]