[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
> > 
> 
> Also,
> 
> 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.
> 
> Thanks,
> Johnny Hughes
> CentOS-4 Lead Developer
> _______________________________________________

Everyone,

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
us. 

I am continuing my testing of CentOS and everything is going better than
I expected.  

Greg



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