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 find I start so many posts these days describing how busy I've been as an excuse to why my post
frequency has been lower than normal. This has to have been a new record as I spotted my last post was over a
month ago. This time however I do have a much better excuse, two weeks time off away... [Continue Reading]
Its been so difficult to keep all this to myself over the last few months, especially last month when we actually reached our goal. 1 Million real life IOPs at less than 1ms - no caching, just pure raw performance. You may, or may not have seen the IBM press release , covering the first part of... [Continue Reading]
... a mid-term interrupt... The storage system behind IBM's PureFlex, PureSystems recent announcement, is of course the IBM Storwize V7000 controller... Check out more details at http://www.ibm.com/ibm/puresystems/us/en/index.html#tab:overview/subtab:default (Hence all my expert video posts over... [Continue Reading]
The interop just keeps growing. As you would expect you can today attach the new IBM Storage products behind SVC, running the latest 4.3.0 software. SVC has actually supported XIV since August, we completed the controller qualification during our last SVT cycle, and the IBM Storage teams in the US... [Continue Reading]
I thought it was time to get back to some technical content, and with recent blog posts, it clear that there is some confusion over how SVC works. In particular how the actual virtual to physical blocks are mapped, how they can be changed without application disruption, and how you get data into... [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 Serial Storage Architecture Years - 1990-1998 Its been a crazier than ever year. All will become clear soon. But one of the things I wanted to discuss with you all is just what kind of history comes with the team of ~150 storage people that I work with on a daily basis. Of course there are a... [Continue Reading]
Quick interrupt to my partwork. The SVC Entry Edition and 4.3.1 code base is now available for download from the usual SVC download page . As usual, this is a no cost upgrade, and provides support for all existing SVC hardware, 4F2, 8F2, 8F4 and 8G4, not to mention the new EE SVC node hardware. The... [Continue Reading]
There has been a lot of twitter banter, and blog posts about Tiering. Netapp claiming you don't need
to tier, EMC and IBM saying tiering is important and 3Par Farley going so far as to say that Netapp
can't do tiering easily, hence their response, and discussion of PAM being the way to resolve.... [Continue Reading]
When Nigel asked the question about IBM's age in Infosmack 101 I was initially amazed hat everyone didn't instantly know that IBM is 100 this years young this year, next week infact.
I guess internally we've had a lot more press about this than there has been externally. Anyway, on 16th June... [Continue Reading]
Following last Septembers "Information Infrastructure" launch, IBM today announced wave two subtitled Dynamic Infrastructure . The press release covers some of the higher level details, and a new "DI" portal has been created on the IBM website. From a disk and storage perspective the DS8000 gets... [Continue Reading]
In part2 of this "HiW" - How it Works - discussion of SVC, I look at how you can take an existing SAN infrastructure and Virtualize it. Import your Data Its likely that today you have a SAN of some kind. It maybe a couple of 32 port switches, or it maybe a pair (or more) of enterprise class... [Continue Reading]
After a couple of weeks of car hell, that resulted in the entire removal of the intake manifold, just to get to the darn crappy sensor that had packed up (and Land Rover informed me was the 3rd re-design - in any other business that would mean ' 2x faulty design) but anyway, thanks Geoff for the... [Continue Reading]
I've just been through some of our detailed results for 4Q, given that we only announced availability of the new CF8 hardware back in November and exceeded expectations with their adoption. Over the quarter Tivoli Storage Software, which SVC comes under, saw double digit growth.
The up-take of... [Continue Reading]