Alternately the use case is HPC scratch space where you can regenerate
the data by re-running jobs and speed/capacity are more important than
long term storage, you might consider 2x replication with min_size 1.
That probably falls under the "not caring about your data" use case
though. ;)
And btw EC with k=2, m=2, min_size=3, is also probably fine, and has
only x2 space cost.
-- dan
On Wed, Feb 19, 2020 at 5:46 PM Paul Emmerich wrote:
>
> x2 replication is perfectly fine as long as you also keep min_size at 2 ;)
>
> (But that means you're offline as soon as something is offline)
x2 replication is perfectly fine as long as you also keep min_size at 2 ;)
(But that means you're offline as soon as something is offline)
Paul
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On 2/19/20 3:17 PM, Frank R wrote:
> Hi all,
>
> I have noticed that RedHat is willing to support 2x replication with
> NVME drives. Additionally, I have seen CERN presentation where they
> use a 2x replication with NVME for a hyperconverged/HPC/CephFS
> solution.
>
Don't do this if you care
Thanks for clearing that up.
On Wed, Feb 19, 2020 at 9:47 AM Dan van der Ster wrote:
>
> Hi,
>
> 2x replication was for a performance test. We use 3x in production.
>
> -- dan
>
> On Wed, Feb 19, 2020 at 3:18 PM Frank R wrote:
> >
> > Hi all,
> >
> > I have noticed that RedHat is willing to
Hi,
2x replication was for a performance test. We use 3x in production.
-- dan
On Wed, Feb 19, 2020 at 3:18 PM Frank R wrote:
>
> Hi all,
>
> I have noticed that RedHat is willing to support 2x replication with
> NVME drives. Additionally, I have seen CERN presentation where they
> use a 2x
