<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by ClueByFour:
To a very real extent, that depends entirely on your support requirements.
My firm (Fortune 500) has support from Sun and HP and IMB and EMC and the like that blow away anything, and I do mean anything, you can get from Red Hat or any other Linux vendor. When you are talking about six or seven figures of loss for an hour of downtime, this changes the equiation somewhat.
Linux, like most other things, should be used where it fits the best into your network/application structure.
I find the original poster's client who is going with Unixware over linux to be the most ironic thing I've read all week.
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Are you including IBM as a Linux vendor that doesnt provide comparable support?? I thought all the major banks and such were moving a lot of stuff to Linux as mentioned above. IBM is really pushing it from what I can see. I think your best bet would be to get an IBM salesperson in there to push a Linux solution.