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.
I wrote this a few weeks back - was waiting for the right time to post - and for once it seems Hu and I are coming from the same place!
Its likely a lot of my regulars have heard of Yotta Yotta. To all extents and purposes they produced and interesting SAN cache prototype. It used lazy... [Continue Reading]
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]
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]
The "modular monolith" has arrived. Oh how the EMC spin doctors must have jumped for joy when they realised the next version of the almost 20 year old Symmetrix family, the DMX-5 could also mean DMX-V in roman numerals. Better still lets try and jazz it up furter, how about DMX V-"Max". Oh how... [Continue Reading]
Just a quick one to point you to the latest attempt from Chuck Hollis to spread more FUD about Storage Virtualization and why he wishes it would go away. I can tell you why he wants it to go away, and its nothing to do with the arguments he lays out... There is some interesting discussion in the... [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]
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]
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]
Back in August I posted about the 'Stealth' announcement of Invista 2.0. It seems that our friends over at EMC decided that after almost 6 months, they'd try again and actually tell the world this time. I thought I'd wait till the end of the week to see if the rest of the marketing, analyists and... [Continue Reading]
Over at The SAN Technologist Steven is making some wild and mostly inaccurate statements, particularly about SVC, as well as some curious associations between startup company failures and storage virtualization. He asks : So why has storage virtualization failed? I wasn't aware it had, and with SVC... [Continue Reading]
Talk to any storage or system administrator and one of their major pain points (after data movement pains) is making A work with B and keeping C at the right firmware level so that A works with C as well as B and so on. Sometimes this just isn’t possible and can lead to infrastructure ‘exceptions’... [Continue Reading]
I find it interesting that v2 of Invista has been so quietly 'introduced' - very unlike EMC. I spotted a reference to it a few months back on Mark's blog, but couldn't find any press or EMC website coverage. The article from CBR covers some interesting points that I wanted to bring up here. I've... [Continue Reading]
Cornerstone #5 The potential to increase system performance While this topic directly corresponds with ‘Cornerstone #5’ it does also contribute #2 Simplification of storage management and #4 Increased storage utilization Pooling and Striping Most enterprise level controllers, the likes of DS8000,... [Continue Reading]