Hi Dave,
The generic goal for tier 2 sites in the UK is 1 gigabit.
Having said that it rather depends on which VO's you are going to
support and what data rates they would expect.
Cheers Pete
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Peter Gronbech Unix Systems Manager and Tel No. : 01865 273389
SouthGrid Technical Co-ordinator Fax No. : 01865 273418
Department of Particle Physics,
University of Oxford,
Keble Road, Oxford OX1 3RH, UK E-mail : [log in to unmask]
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-----Original Message-----
From: Testbed Support for GridPP member institutes
[mailto:[log in to unmask]] On Behalf Of David Robson
Sent: 15 December 2006 16:03
To: [log in to unmask]
Subject: Re: Network Connection Speed
I wasn't necessary thinking of just within the UK. I am primary
concerned with our own network connection . We have a 34Mbs connection
to JANET, but that is shared with other resources and not dedicated to
EGEE. I wonder if this is a bottleneck for users of our tier 2 site,
and if so, what bandwith we should be aiming at.
Dave
brian davies wrote:
> I do not know what a generic connection speed between sites. They is a
> broad spectrum of site speed with effects of The end site network
> configuration to be taken into account. As an example. Lancaster to
> Manchester has a potential of up to 1Gbps when considering local end
> network and MAN provisioning for our clusters; but get between 600-800
> Mbps per second when considering shared traffic flows. Of course this
> is within the UK from two institutes which are relatively close
> together. By EGEE sites, are you mainly concerned about UK EGEE sites?
> Mark Leese or Robin Tasker at Daresbury Lab may have better answers
> for international grid sites and nore in depth knowledge of general
> network connections.
> Brian
>
>
> On 15/12/06, David Robson <[log in to unmask]> wrote:
>> Hi.
>>
>> Does anyone have a handle on typical/maximum/minimum internet
>> connection speeds for tier 2 EGEE grid sites ?? Is this info
>> published anywhere ?
>>
>> It would be useful when building cases to get funding for new
>> connections ...
>>
>> Thanks in advance
>>
>> Dave Robson
>>
>
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