[Asterisk-Users] Re: Re: load balancing 20 asterisk servers

[Miguel Ruiz Velasco Sobrino]

--- asterisk-users-request at lists.digium.com wrote:

> > DNS based load ballancing has it's place, as dose using an
> > application level switch.  
> > 
> > Say an earthquake takes out your California data center.
> > Shortly the DNS servers will notice and pull that center's
> > record.  However do to caches and all this is not fast
> > and users will notice.
> > 
> > What the switch does is route at the protocol level between
> > local machines.  You can take a machine off line and no one
> > will notice.  Works great until the big quake a backhoe
> > takes out a fiber cable ro there is a fire flood or who
> > knows what.
> 
> You have fiber-seeking-backhoes in your area? Wow!

Once in the data center where the company i worked had their equipment, a car crashed in
the outside wall, and was just the place where 1 of the two whole floor power panel were,
so half of the equipment crashed due to lack of energy, and also broke a fibre
patchpanel, so the available bandwidth was minuscule.
And in other ocasion, one repair gang in the city literally cutted a fibre cable with a
street digger, and the repair lasted about 1 month.
Massive catastrophic failure due to external causes IS a possible scenario.
And yes, it IS a world class data-center.

=====
Miguel Ruiz Velasco

Version: OpenKeyServer v1.2
Comment: Extracted from belgium.keyserver.net
Signature: 0x59831109


		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - Helps protect you from nasty viruses. 
http://promotions.yahoo.com/new_mail