Hi Matt,
I've tried to get some information from all the sites a while ago, without
any success.
http://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0507&L=gridpp-storage&T=0&O=A&P=8830
We currently have just the default assignment, where any VO can go into
any pool, but I will probably change this when I reinstall the next dCache
release. I think it really depends on what VOs you support. You'll
probably find that the LHC experiments will use more space than someone
like biomed, so it might be a 'waste' giving them a few TBs when no-one
else can use it.
I guess in the true Grid model you shouldn't really assign VOs to
particular pools. Instead, you should just let them get on with using
what storage you have and if it fills up then they can go elsewhere. I
don't know what peoples thoughts are about this. I presume that there will
be local site policies regarding these sorts of issues.
Cheers,
Greig
On Wed, 26 Oct 2005, Matt Doidge wrote:
> Hello,
> Seeing as we're on a fresh install of dcache here at lancaster I'm
> having to go through the pool-VO mapping process again. Seeing as we
> have twice as many pools as we did last time I decided to look over
> our "pool assignment policy" (it's a simple text file) and update it.
> After discussion with a collegue we're wondering: Is VO-pool mapping
> an absolute nessicity, or could we just keep everything as `default'
> and hope no VO starts to get greedy with the disk space.
>
> Our general site policy otherwise is to ensure that each VO has one or
> more `reserved' pools for its own use, then we have a large amount of
> `default' space availiable to all. So no matter how greedy someone
> gets with the disk space, a VO always has at least a couple of TB to
> call their own.
>
> What do people think? Is the free-for-all idea just plain folly? And
> what are everyone else's policies?
>
> cheers,
> matt
>
> ps my apolgies if this topic has been bought up before, I had the
> nagging feeling we've already has this debate but can't find the
> thread, so I thought it worth bringing up again
>
--
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Dr Greig A Cowan http://www.ph.ed.ac.uk/~gcowan1
School of Physics, University of Edinburgh, James Clerk Maxwell Building
TIER-2 STORAGE SUPPORT PAGES: http://wiki.gridpp.ac.uk/wiki/Grid_Storage
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