"This started out when a co-worker needed to return a loaner
server and needed to replace it with another box. It needed to be a
drop in replacement, with all it's functions intact. The current OS
was SCO UnixWare, and while it's a good stable OS, I thought it was
prudent to check out other alternitives. One obvious choice was
Linux, and as it turned out, it was perhaps the best, but not the
only choice to replace this stalwart Intel Unix OS. I had less than
a month to do it."
"Linux (namely RedHat 6.1) offered most of the above features
and was very comparable on all counts. Advanced features like
fail-over clusters, scalability, ect. were all available in the
RedHat advanced package along with Sendmail, Apache, and other
features like PAM autentication, SSL encryption, clustering, LDAP,
5 nines uptimes, ect. I had used Linux 5.x and 6.0 at home and felt
6.1 was Way Better than the older versions."
"In the end the difference came down to application support.
Linux won that hands-down. The recent rash of Linux publicity has
sparked a fresh wave of application developers and software
companies of all stripes to port their legacy applications to
Linux. It seems to have won that battle, as all of the code
can be tuned to any specific platform, with little or no regard for
restictive licencing provisions."