On Wed, 22 Nov 2006, Jacek Becla wrote:
>
> - I'm planning to meet with google DBAs over lunch to talk more
if it was lunch today i guess it's too late, but it wd be really
informative to find out (among other things):
- how they do the fault tolerance,
- how much redundancy they have,
- what kind of RAID they use,
- what is their disk failure rate,
- how exactly they do the failovers, and
- how many hardware (sysadmin) people they have to do the failovers.
my guess is that their budget is a lot bigger than ours ;-), so we wont
be able to quite emulate their model.
>
>
> few other notes picked from discussions with user community
>
> - mentioned by several people independently:
> - very bad experience with expensive fancy hardware:
> - high expectations, breaks more often then expected,
> cheap hardware catches up quickly (the fancy hardware
> no longer fancy after 2 years)
> - much better in long term to keep it simple:
> cheap hardware, build in redundancy, fault tolerance...
maybe so, but there's a big step between "cheap" hardware and "fancy"
hardware. we shd aim for something in between, i.e., more reliable
hardware vendors without going for the high-end fancy stuff, esp. when
it comes to disks.
ani
--
Aniruddha R. Thakar, Research Scientist
Center for Astrophysical Sciences, JHU, Bloomberg 375
3701 San Martin Drive, Baltimore MD 21218-2695
410-516-4850, Fax: 410-516-5096
[EMAIL PROTECTED], http://www.sdss.jhu.edu/~thakar
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