--- Steve Underwood <[EMAIL PROTECTED]> wrote: > WipeOut wrote: > > > Granted five 9's is never easy but in a cluster of 10+ servers the > > system should survive just about anything short of an act of God.. > > You do realise that is a real dumb statement, don't you? :-) > > A cluster of 10 machines, each on a different site. Guarantees from > the > power company - checked personally to see that aren't cheating - that > > you have genuinely independant feeds to these sites. Large UPSs, with > > diesel generator backups. Multiple diverse telecoms links between the
If he says "cluster" he likely means 10 servers in one rack. But still you are right. It is all the other stuff that could break. You will need paralleld Ethernet switches (Yes they make these, no, they are NOT cheap.) you will need some kind of fail over. The switches can do that for you. (do a google on "level 3 switch") It's the level three switches that make .99999 possible but half or more of your hardware will be just "hot spares" so it really will take a rack full of boxes Each box should have mirrored drives and dual power supplies and each AC power cord needs to go to it's own UPS Has anyone tried to build Asterisk on SPARC/Solaris? One SPARC server is almost five nines all by itself as it can do thinks like "boot around" failed CPU, RAM or disks. I've actually pulled a disk drive out of a running Sun SPARC and applications continoued to run. ===== Chris Albertson Home: 310-376-1029 [EMAIL PROTECTED] Cell: 310-990-7550 Office: 310-336-5189 [EMAIL PROTECTED] KG6OMK __________________________________ Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
