[CentOS] 4.4 versas AS and ES
Gregory P. Ennis
PoMec at PoMec.Net
Wed Nov 1 21:32:21 UTC 2006
On Mon, 2006-10-30 at 06:08 -0600, Johnny Hughes wrote:
> On Sun, 2006-10-29 at 22:46 -0700, Craig White wrote:
> > On Sun, 2006-10-29 at 23:08 -0600, Gregory P. Ennis wrote:
> > > On Sun, 2006-10-29 at 22:46 -0600, Barry Brimer wrote:
> > > > > I am a new user of Centos and have started the process of becoming
> > > > > informed as to what centos can do. Sorry to ask a simple question but
> > > > > can you tell me where centos 4.4 compares with Red Hat Enterpres AS or
> > > > > ES?
> > > >
> > > > There is no technical difference between RHEL AS and RHEL ES. The
> > > > difference is in what Red Hat will or will not support as far as the
> > > > number of CPUs and the amount of RAM in a system. RHEL 4 ES and RHEL 4
> > > > AS can both support the hardware listed for RHEL AS. The difference is
> > > > that if you call Red Hat and have support for RHEL ES and you have more
> > > > than 2 physical processors or more than 16 GB of RAM they will tell you
> > > > that you are running an unsupported configuration. If you are running
> > > > RHEL 4 AS with the same configuration, you are running a supported
> > > > configuration.
> > > >
> > > > These issues do not plague CentOS. You can expect CentOS 4 to run
> > > > hardware up to the same configuration of RHEL 4 AS.
> > > >
> > > > Barry
> > >
> > > Barry and Craig,
> > >
> > > Thanks for your answers. This helps a lot. Is there anything that RH 4
> > > ES or AS can do that Centos 4.4 is unable to perform. Then it looks
> > > like Centos is just as stable as ES or AS, and the support will probably
> > > be better on this list than calling RH.
> > >
> > > I was considering migrating an application from SCO to RedHat, and now
> > > it looks like Centos would even be better.
> > ----
> > Red Hat is selling a service level agreement. CentOS is user supported.
> > You have to draw your own conclusions as to the value of a Red Hat SLA.
> > Craig
> I would point out that RH has the RHN ... which will allow you to
> register machines and push configurations or updates to specific
> machines via that interface.
> CentOS does not have a server register mechanism that pushes updates and
> all updates are pull to the client. CentOS uses either yum or up2date
> (run on the client) to pull updates from our mirrors (or from a local
> mirror if you configure it that way).
> Most users use up2date on RHEL (which is pull as well), so this is not
> really a major issue, however centrally controlled push updates is
> another benefit of an RHEL subscription.
> Johnny Hughes
> CentOS-4 Lead Developer
Thanks again for your response. In regards to RH support it has been
very good, but the user support I have received on the Fedora list and
what will be present on this list has been even better.
The yum updates on individual machines will be very satisfactory for
I am continuing my testing of CentOS and everything is going better than
More information about the CentOS