[openstack-dev] [nova][scheduler] Availability Zones and Host aggregates..

Duncan Thomas duncan.thomas at gmail.com
Thu Mar 27 21:03:18 UTC 2014

On Mar 26, 2014 6:46 PM, "Jay Pipes" <jaypipes at gmail.com> wrote:

> Personally, I feel it is a mistake to continue to use the Amazon concept
> of an availability zone in OpenStack, as it brings with it the
> connotation from AWS EC2 that each zone is an independent failure
> domain. This characteristic of EC2 availability zones is not enforced in
> OpenStack Nova or Cinder, and therefore creates a false expectation for
> Nova users.

I think this is backwards training, personally. I think azs as separate
failure domains were done like that for a reason by amazon, and make good
sense. What we've done is overload that with cells, aggregates etc which
should have a better interface and are a different concept. Redefining well
understood terms because they don't suite your current implementation is a
slippery slope, and overloading terms that already have a meaning in the
industry in just annoying.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140327/3dc590ae/attachment.html>

More information about the OpenStack-dev mailing list