[Linux-HA] Availability Theory (STONITH)

[Carson Gaspar]

--On Wednesday, August 09, 2006 11:37 PM -0700 "Robinson, Eric" 
<eric.robinson at pmcipa.com> wrote:

> Does attaching each of your cluster nodes to a separate NPS increase or
> decrease overall cluster availability? At first blush, I would think you
> want to eliminate the NPS as a SPOF, but I found a really interesting
> e-mail thread from 2002 where Lars seems to argue the opposite. It is a
> complex discussion and I'm not sure I follow it all. What is the current
> thinking on this subject? Should I plug both nodes of a 2-node cluster
> into the same NPS, or into 2 separate ones?
>
> See:
> http://copilotconsulting.com/mail-archives/linux-ha.2002/msg01546.html

Lars' math is about using 2 NPS devices on _one_ host (assuming it's a 
dual-power-supply unit), if I'm reading his response correctly.

-- 
Carson