On Fri, Aug 10, 2018 at 8:25 AM Burkhard Linke <
burkhard.li...@computational.bio.uni-giessen.de> wrote:
> Hi,
>
>
> On 08/10/2018 03:10 PM, Matthew Pounsett wrote:
>
> *snipsnap*
> >> advisable to put these databases on SSDs. You can share one SSD for
> several
> >> OSDs (e.g. by creating partiti
Hi,
On 08/10/2018 03:10 PM, Matthew Pounsett wrote:
*snipsnap*
advisable to put these databases on SSDs. You can share one SSD for several
OSDs (e.g. by creating partitions), but keep in mind that the failure of
one of these SSDs also renders the OSD content useless. Do not use consumer
grade
On 10 August 2018 at 07:09, Janne Johansson wrote:
>
> As opposed to the previous setup, this will add some inter-host traffic
> aswell, each write to the primary PG will then in turn cause that host to
> replicate it
> again over the network to X other hosts to form the required amount of
> repl
Wow.. thanks for such a detailed reply!
On 10 August 2018 at 07:08, Burkhard Linke <
burkhard.li...@computational.bio.uni-giessen.de> wrote:
> The default ceph setup uses 3 replicates on three different hosts, so you
> need at least three hosts for a ceph cluster. Other configurations with a
> sm
Den fre 10 aug. 2018 kl 04:33 skrev Matthew Pounsett :
>
> First, in my tests and reading I haven't encountered anything that
> suggests I should expect problems from using a small number of large file
> servers in a cluster. But I recognize that this isn't the preferred
> configuration, and I'm
Hi,
just some thoughts and comments:
Hardware:
The default ceph setup uses 3 replicates on three different hosts, so
you need at least three hosts for a ceph cluster. Other configurations
with a smaller number of hosts are possible, but not recommended.
Depending on the workload and acces
I'm looking for some high level information about the usefulness of ceph to
a particular use case and, assuming it's considered a good choice, whether
the migration path I have in mind has any particular gotchas that I should
be on the look out for.
The current situation is that I've inherited res
