1- thanks a lot. 2- I'm reading now about centos. In our business we need an opensource O.S and our need is install our application ( e-business software and we need only Internet ) in hundered Pc's and if we using M.S our project will freeze. we trying to test and decide what opensource O.S is better for us. 3- what about SUSE again thankx. <div class="gmail_quote">On Jan 13, 2008 8:17 PM, Barry Brimer <<a href="mailto:lists@brimer.org"> lists@brimer.org</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="Ih2E3d">> Hi all, > we are trying to install RHEL in our pc's we have hundered of pc's in > different location but it's owned by only one company, so my question is: > > should we buy only one RHEL or its depend about how many pc's we have and > if there any way to read full license for RHEL. </div>My understanding is that you need a license for every single computer you install RHEL on. It is not the installation really, but in order to use/receive their updates in binary form legally, you must have the appropriate number of licenses. I believe that there is a discounted price available for HPC compute nodes as well. <div class="Ih2E3d"> > I am talk specially about RHEL 5.0 or further official release. thanks </div>Another viable option is CentOS <<a href="http://www.centos.org" target="_blank">http://www.centos.org</a>>. CentOS is a rebuild of RHEL from sources that Red Hat provides in accordance to the GPL, and because they are a true open source company. CentOS takes great care to provide the closest thing you can get to RHEL without buying RHEL. I have been using it for years, both personally and professionally and I've never once had a problem with it. If I am putting software on a system that requires RHEL for support (i.e. Oracle, WebSphere, etc.) I buy RHEL. If I am building a machine that I use for network scanning, interesting uses of apache that Red Hat won't support, or testing machines, I use CentOS. There is no formal CentOS support, but the mailing list is very active. I suppose you could also contact a company that provides commerical support for CentOS as well. Hope this helps. Barry -- redhat-sysadmin-list mailing list <a href="mailto:redhat-sysadmin-list@redhat.com">redhat-sysadmin-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list" target="_blank"> https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list</a> </blockquote></div>