> -----Original Message-----
> From: Testbed Support for GridPP member institutes [mailto:TB-
> [log in to unmask]] On Behalf Of Ian Collier
>
> Just my tuppence, having been running perfsonar for a few months now, but
> 4GB is ample. Also I CPU is plenty.
>
Yup - the only reason for the dual CPUs in my version
was that the portal won't do single CPU versions as
standard, it's a special option that the pre-canned
perfsonar box has, but you can't get on the usual
R610. We could ask Dell for a single CPU one, but I
don't think E5620s cost very much these days.
> Dual PSUs are not a bad idea, but far from essential.
>
Well, I don't know. On one level the availability of
the network is the AND of the availability of all the
boxes - no-one can test their link to Oxford if the
Oxford endpoint is dead - so we should try to keep them
up.
> Mirrored disks are more or less essential.
>
> It looks to me as though the spec discussed is much (bordering on grossly)
> over what is required.
>
With the exception of the dual CPUs, it's about the
minimum computational spec currently available, but
with the reliability features that a long-term monitoring
project needs.
> It is public money being spent. Specifying boxes close to the actual load
> is really a good idea.
>
It's a value proposition - I think the benefits of having
proper reliable, maintainable server type hardware is
worth the relatively small additional cost. You don't have
to avoid much downtime or save much staff time before these
things will have paid for themselves.
Ewan
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