On 03/27 02:49 , Les Mikesell wrote: > I find complete-system redundancy with commodity boxes to be cheaper and > more efficient than using military strength parts that cost 10x as much > and fail half as often.
That's Google's solution, and it works for them. Nothing fancy... rebooting servers means a dude with a broomstick walking around pushing power buttons. > The real killer is the time planning out the replacement operation so > the only time wasted is the one person who does the work. In the > whole-system scenario where the systems are load balanced anyway, > yanking a machine out isn't anything special and you don't even need the > hot-swap drive case. it's a nice ideal circumstance. :) In practice I've found that clustering systems often increases administrative headaches exponentially. There's a lot more that *can* go wrong and therefore *does* go wrong with a cluster. There's a place for them, like everything else... but they are far from a panacea. > In practice I don't see any relationship between price and reliability. > I'm inclined to think that they all come off the same production line > these days. some are still better than others... how much better, I don't know. I've seen some really expensive hardware go belly-up at times too. Here's what I did with some of the aforementioned bad & expensive hardware: http://www.redchrome.org/shooting_computers/shooting_computers_index.html (the Sparc 10, specifically) -- Carl Soderstrom Systems Administrator Real-Time Enterprises www.real-time.com ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ BackupPC-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
