[Linux-HA] Article in SA Mag

[Alan Robertson]

Tony Boucher wrote:
> What's also interesting is if you go back and look at the cluster doc 
> from RedHat 6.2 the description &  terminology and some funtcionality is 
> identical to HACMP (IBM Clustering).
> 
> Most of my cluster work is with HACMP. Up unitl a couple  versions ago, 
> alot of the componets of HACMP were scripts and used "r" commands. They 
> have  decreased the use of scripts and created more binaries. (Syncing 
> and verfing of cluster is quicker) It is also heavly dependent on RSCT 
> layer.
> 
> I have also noticed that some of functionality that users on this list 
> are requesting and using are not available in HACMP. (We have come to 
> accept and live with the short commings) :-(
> 
> 
> I wonder what came first, the chicken or the egg? ;-)


No one lives in a vacuum...

The original code for RH's cluster manager came from some people who had 
lots of DEC clustering experience.  Two of those same people are now 
managers in Red Hat.

One of the early documents on HA on Linux was a developer's howto which 
was written by an ex-IBMer who knew how HACMP worked from a high-level 
view pretty well.  I used it to learn about HA - since I was clueless 
before starting this project ;-).

If you have a list of things that we do that HACMP doesn't do - or vice 
versa, those would be good to know.  Either send to me or the whole list.

 From what I can tell, Linux-HA release 2 ranks reasonably high on the 
sophistication scale for HA products.

It would be interesting to hear what other people with experience in 
other products have to say.


-- 
     Alan Robertson <alanr at unix.sh>

"Openness is the foundation and preservative of friendship...  Let me 
claim from you at all times your undisguised opinions." - William 
Wilberforce