[san-tech][03213] Googleは GFSから新ファイルシステムに移行中

Date: Sat, 25 Jun 2011 22:53:31 +0900
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ZDNet UKの Google Urs Hölzle博士, Google Fellow, Senior Vice President of
Operationsとのインタビュー記事です：

"Google: 'At scale, everything breaks'"
 22 June, 2011, ZDNet UK
  http://www.zdnet.co.uk/news/cloud/2011/06/22/google-at-scale-everything-breaks-40093061/
  http://www.zdnet.co.uk/news/cloud/2011/06/22/google-at-scale-everything-breaks-40093061/2/

.....
   Q:"What are Google's plans for the evolution of its internal
      software tools?"

   Urs Hölzle: "There's obviously an evolution. For example, most
   applications don't use [Google File System (GFS)] today. In fact,
   we're phasing out GFS in favour of the next-generation file system
   that is very similar, but it's not GFS anymore. It scales better and
   has better latency properties as well. I think three years from now
   we'll try to retire that because flash memory is coming and faster
   networks and faster CPUs are on the way and that will change
   how we want to do things"

.....
   Q:"In your role, what is the most captivating technical problem you
      deal with?"

  "I think the big challenges haven't changed that much. I'd say that
   it's dealing with failure, because at scale everything breaks no matter
   what you do and you have to deal reasonably cleanly with that and try
   to hide it from the people actually using your system."

.....
  "We use tapes, still, in this age because they're actually a very
   cost-effective way as a last resort for Gmail. The reason why we put
   it in is not physical data loss, but once in a blue moon you will have
   a bug that destroys all copies of the online data and your only
   protection is to have something that is not connected to the same
   software system, so you can go and redo it."

Urs Hölzle, Google Research
  http://research.google.com/pubs/author79.html


解説記事：
"Google apps split with Google File System"
 23rd June 2011, The Register
  http://www.theregister.co.uk/2011/06/23/google_moves_off_the_google_file_system/
※今までの経緯等を、過去の記事にリンクしながら解説しています。
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[san-tech][03144] "High Performance Datacenter Networks: Architectures, Algorithms, and Opportunities", Dennis Abts, Google. 2011 (115 Page) 

このシリーズからは以前紹介した
[san-tech][01684] "The Datacenter as a Computer", L. Barroso and U. Hoelzle, Google

> "The Datacenter as a Computer:
>  An Introduction to the Design of Warehouse-Scale Machines",
>  Synthesis Lectures on Computer Architecture, 2009,
>  Luiz Andre Barroso and Urs Hölzle, Google Inc.
> Abstract
>   http://www.morganclaypool.com/doi/abs/10.2200/S00193ED1V01Y200905CAC006
> PDF (120ページ！、無償公開)
>   http://www.morganclaypool.com/doi/pdf/10.2200/S00193ED1V01Y200905CAC006
も刊行されています。

Synthesis Lectures on Computer Architecture
Morgan & Claypool Publishers
  http://www.morganclaypool.com/toc/cac/1/1
※どれが無償公開か明記されていません (多分 Google関連 2冊だけ無償)。