[ceph-users] Question about hardware and CPU selection

Hi, as I am planning to set up a ceph cluster with 6 OSD nodes with 10 harddisks in each node, could you please give me some advice about hardware selection? CPU? RAM? I am planning a 10 GBit/s public and a separate 10 GBit/s private network. For a smaller test cluster with 5 OSD nodes and 4

Re: [ceph-users] why was osd pool default size changed from 2 to 3.

Hello, There have been COUNTLESS discussions about Ceph reliability, fault tolerance and so forth in this very ML. Google is very much evil, but in this case it is your friend. In those threads you will find several reliability calculators, some more flawed than others, but penultimately you

Re: [ceph-users] why was osd pool default size changed from 2 to 3.

> Am 23.10.2015 um 20:53 schrieb Gregory Farnum: >> On Fri, Oct 23, 2015 at 8:17 AM, Stefan Eriksson wrote: >> >> Nothing changed to make two copies less secure. 3 copies is just so >> much more secure and is the number that all the companies providing >> support recommend, so

Re: [ceph-users] why was osd pool default size changed from 2 to 3.

On 10/24/2015 09:41 AM, Stefan Eriksson wrote: >> Am 23.10.2015 um 20:53 schrieb Gregory Farnum: >>> On Fri, Oct 23, 2015 at 8:17 AM, Stefan Eriksson > wrote: >>> >>> Nothing changed to make two copies less secure. 3 copies is just so >>> much more secure and is the number