| HI,
I can't give you any technical information regarding INGRES, but
I run an account in the U.K. who have decided upon INGRES as their
corporate DB system. We have conciously distanced ourselves from
the software side of the project for obvious reasons.
On the sizing/performance side, the customer was looking to support
100-120 users on a Distribution Management System, with a telesales
element to be added later. RTI originally sized the system at a
twin 8200 cluster, with an option to go to three 8200s later. The
idea was that they should suffer minimal degradation in the event
of processor failure, so this was a kind of hot standby system.
As the implementation went on it became clear that this was WILDLY
undersized. They now anticipate being able to support the environment
on a cluster of one 8200 and two 8700 systems, which they are planning
shortly to upgrade to 8800s.
The same company experienced a similar problem in another environment,
where an OEM for RTI sized a system at an 8250, and it turned out
that an 8530 / 8700 was more appropriate.
So: I don't know whether this has been useful to you, but beware
of any sizing done by RTI or its OEMs; it would appear to be, on
the strength of these experiences anyway, extremely dodgy.
Cheers
PDB
|