On Wed, Sep 26, 2001 at 02:41:33PM -0400, Aaron Held wrote:
| This is one of those nebulous questions that usually
| get answered with another question but here goes anyway.
Here is the chart I give my customers.
|Peak Usage | Calculated
Number of |Frequency | Number of | Hardware | Est.
People Using |of System | Concurrent | Requirement | Cost
the System |Requests | Requests(1)| |
-------------+-----------+------------+------------------+-------
20 people |4x per hour|20*4/60 = 2 | 128MB+20G+500MHZ |$400.00
20 people |20x per hr |400/60 = 7 | 256MB+20G+650MHZ |$450.00
20 people |60x per hr |20 per min | 512MB+20G+850MHZ |$500.00
50 people |4x per hour| ...
...
You need to then fill in the chart. My chart also has another
column called estimated bandwith... which is used to compute
the size of the pipe.
Now... I actually don't have good numbers for this as I'm
new to the whole game. Does anyone have a spreadsheet
with realistic numbers? I know it varies per application...
but with a few settings at the top of the spreadsheet like
(cycles per request) and (cycles per second). One could
come up with a useful tool. The first number is a factor
of applicaiton complexity, and the second is a factor of
the hardware...
Best,
Clark
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