> i regard reliability more important than availability as it comes to my > mail, userland arrangements like these give me the creeps. i'm > suggesting that he should try mitigating the reasons for his > unavailability first. users should get used to 99.9% availability, and > that's a reasonable figure for a non-replicated system. or look into > some database system with built-in replication functionality. > > anyway, have you any good examples to throw back at me? > > /k
I suggest people look at Chapter 17 of Operating System Concepts (7th Edition) by Silberscatz, Galvin, and Gagne. You can get the EVIL powerpoint presentation on that chapter here: http://www3.interscience.wiley.com:8100/legacy/college/silberschatz/0471 694665/slides/ch17.ppt
