[Pacemaker] Stonith Device APC AP7900

Dejan Muhamedagic dejanmm at fastmail.fm
Mon Nov 15 06:29:29 EST 2010


On Sun, Nov 14, 2010 at 09:32:06PM -0700, Devin Reade wrote:
> Rick Cone <rcone at securepaymentsystems.com> wrote:
> > Perhaps I'll just use 1 outlet with the node name,
> > with a power splitter to the 2 redundant power supplies to reduce the
> > chances of problems.
> IMO, if you're going to use a chassis with redundant power supplies,
> you're better off with a system that uses an ALOM/DRAC/iLO, or equivalent
> that sits between the redundant power bus and the main boards, and
> then plug your redundant power supplies into two different circuits.
> Otherwise, for what's supposed to be an HA system, you're introducing
> unnecessary single points of failure.  I know the arguments about
> using an external device for fencing, but in the redundant power case
> if you can't reach your ALOM/whatever you're already looking at the
> multiple failures.

Right, a lights-out device would do in this case just as well.
Though I still wonder why that time (once or twice?), the APC
failed to list all outlets.

> But it's your datacenter.
> FWIW, I can confirm that the AP7900 works just fine and should be 
> added to the list of supported devices.

Thanks. The device has already been added to the list.



> Devin
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