[Linux-HA] Article in SA Mag
alanr at unix.sh
Sun Jun 11 00:07:59 MDT 2006
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
> 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
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