ChadB@xxxxxxxxxxxxxxxxxxxx schrieb:
My gut feeling is that the 60/1200 will be just fine, but you should try to
do some analysis of your interactive workload on the current 720.  You
should be able to get a good enough feel by just looking at the interactive
oriented graphs available within the system monitors in Ops Navigator.
Unless you REALLY need a whole ton of interactive, the Enterprise model
will be a huge premium price to pay... this is worth doing the analysis on
instead of buying the Enterprise model 'just in case'!
We want to replace a model 720 with 120/240 CPW either with a 520+ Express
60/1200 CPW or a 520+ Enterprise with 1200/1200 CPW.

Hello Chad and others,

now we have some numbers:
Users on system overall = 168, with about 100 of them concurrently active.
Our graph from performance measuring of interactive functions is going from
everything between 12% to a 100%, with an average about  35-40%.
We have been advised that you have to calculate abot 1-5 CPW per user,
this would be a 100 CPW minimum for us.
Now, if you take into account, that disk I/O and memory of a 520 are much faster than a 720, is it correct to say that the CPW-value of a 520 counts about 2-3 times
as much as a 720's value ? Or is interactive CPW = interactive CPW ???
BTW, is there such a hard limitation as it used to be with the S20/S30 systems ?
Unfortunately there is a huge gap between those 60 CPW and the enterprise
version with the full 1200 CPW and one is not able to "just do a test-drive".
So even if we could say that 60 CPW nowadays compare to the old 720's CPW
values like 120 or 180 CPW this is still just enough to handle our load of today. Every little bit of extra will slow down the whole system or will it just be the
interactive jobs, that suffer ?


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