Redundant Data Center Architectures

[charles at thewybles.com (Charles Wyble)]

On Oct 28, 2009, at 10:38 AM, Roland Dobbins wrote:

>
> On Oct 28, 2009, at 8:26 PM, Stefan Fouant wrote:
>
>> I'm wondering what are the growing trends in connecting Data  
>> Centers for redundancy in DR/COOP environments.
>
> 'DR' is an obsolete 40-year-old mainframe concept; it never works,  
> as funding/testing/scaling of the 'backup' systems is never adequate  
> and/or allowed.

Very true.

>
> Layer-2 between sites is evil, as well.
>

Indeed. Now VmWare actually supports layer3 for vsphere, maybe we will  
start to see it go away. :)

> Layer-3-independence and active/active/etc. is where it's at in  
> terms of high availability in the 21st Century.  GSLB, et. al.

Yep.

That way all your environments get adequate(ish) funding. Vs  
management saying "oh it's just backup/dr, we will fund it next year".