Greetings, On 3/24/11, Akemi Yagi <amyagi at gmail.com> wrote: > I should note, however, that they are not for production use. > > Akemi Thanks Akemi very much for your always relevant and brilliant works. </rant> As an Indian, where "veda" repository of knowledge originated, I have always looked at every member of this list as a repository of knowledge. http://en.wikipedia.org/wiki/Vedas I am presuming you are of Japanese origin. together India and Japan have had a very, very long shared history indeed : http://www.ece.lsu.edu/kak/VedicJapan.pdf I stand in awe in front of the giant of the members fo this list. i am almost about to rollover to the so-called "golden" age of 50, (the origin of these jubilees of which I am unaware of) My respectful namo namaH (in ITRANS encoding) to all the members. I am sure you have heard of Hanuman from Ramayana the best grammarian known? </rant> Having said that, I have this troubling thought for last decade: What exactly is high availability: is it 24/7 power on time? or is ti "when needed". Please not it am not talking about the maybe arrogant "on demand" attitude of a human. I have been a member of this, linux-cluster, and other lists for alomst half a decade. I have managed a two node Hearbeat/DRBD setup for about 2 years which was transformed into a two-node (which became a three) node RHCS cluster at least for about two Quarters. This under extreme circumstances in India like 4 hours of (Electrical Power Load Shedding) outage every day with no fencing device. I can claim I at least tried that mating dance with those two beasts and (horror of horror) the breeding ground of PHB (vnbrims.org) with about 200 PHB without any significant assistance. I never understood the term "Hig Availability" : does it mean available as in "soliciting" ? What exactly those lusers want? and what exactly we self declared high tech droids / engineers seek? What exactly is "production" use? (I know DEV, UAT, blah, bla, tla etc been there done that and I don't have the T shirt - nobody gave me one) Always with warm regards only, Rajagopal