lure rate (MTBF, or similar)
> to determine if your service guarantees are impacted.
>
> Dominic L. Hilsbos, MBA
> Director – Information Technology
> Perform Air International Inc.
> dhils...@performair.com
> www.PerformAir.com
>
>
> -----Original Message
Dominic L. Hilsbos, MBA
Director – Information Technology
Perform Air International Inc.
dhils...@performair.com
www.PerformAir.com
-Original Message-
From: Phil Regnauld [mailto:p...@x0.dk]
Sent: Friday, May 29, 2020 12:59 AM
To: Hans van den Bogert
Cc: ceph-users@ceph.io
Subject: [ceph
Hello!
Fri, May 29, 2020 at 09:58:58AM +0200, pr wrote:
> Hans van den Bogert (hansbogert) writes:
> > I would second that, there's no winning in this case for your requirements
> > and single PSU nodes. If there were 3 feeds, then yes; you could make an
> > extra layer in your crushmap much l
Burkhard Linke (Burkhard.Linke) writes:
>
> Buy some power transfer switches. You can connect those to the two PDUs, and
> in case of a power failure on one PDUs they will still be able to use the
> second PDU.
ATS = power switches (in my original mail).
> We only use them for "small" ma
Hans van den Bogert (hansbogert) writes:
> I would second that, there's no winning in this case for your requirements
> and single PSU nodes. If there were 3 feeds, then yes; you could make an
> extra layer in your crushmap much like you would incorporate a rack topology
> in the crushmap.
Chris Palmer (chris.palmer) writes:
> Immediate thought: Forget about crush maps, osds, etc. If you lose half the
> nodes (when one power rail fails) your MONs will lose quorum. I don't see
> how you can win with that configuration...
That's a good point, I'll have to think that one throug
original-
De: Burkhard Linke
Enviado el: jueves, 28 de mayo de 2020 15:25
Para: ceph-users@ceph.io
Asunto: [ceph-users] Re: CEPH failure domain - power considerations
Hi,
On 5/28/20 2:18 PM, Phil Regnauld wrote:
> Hi, in our production cluster, we have the following setup
*snipsnap*
Hi,
On 5/28/20 2:18 PM, Phil Regnauld wrote:
Hi, in our production cluster, we have the following setup
*snipsnap*
Buy some power transfer switches. You can connect those to the two PDUs,
and in case of a power failure on one PDUs they will still be able to
use the second PDU.
We only
I would second that, there's no winning in this case for your
requirements and single PSU nodes. If there were 3 feeds, then yes; you
could make an extra layer in your crushmap much like you would
incorporate a rack topology in the crushmap.
On 5/28/20 2:42 PM, Chris Palmer wrote:
Immediate t
Immediate thought: Forget about crush maps, osds, etc. If you lose half
the nodes (when one power rail fails) your MONs will lose quorum. I
don't see how you can win with that configuration...
On 28/05/2020 13:18, Phil Regnauld wrote:
Hi, in our production cluster, we have the following setup
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