[Openstack] [Swift] Erasure code durability and overhead in small clusters

Clay Gerrard clay.gerrard at gmail.com
Tue Mar 13 22:47:22 UTC 2018


On Tue, Mar 13, 2018 at 3:05 PM, Mark Kirkwood <
mark.kirkwood at catalyst.net.nz> wrote:

> To me this suggests that a certain minimum number of *hosts* per region is
> needed for a given EC policy to be durable in the advent of host outage (or
> destruction). Is this correct - or have a flubbed the calculations?
>
>
Looks correct to me.  Ideally you'd have more nodes per region than k+m;
otherwise a reboot would mean WAN traffic - or if that's not possible -
temporary unavailability.

-Clay
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180313/d071b997/attachment.html>


More information about the Openstack mailing list