The Ceph docs are versioned. The link you used is for jewel. Change the jewel in the url to luminous to look at the luminous version of the docs.
That said, the documentation regarding RAM recommendations has not changed, but this topic was covered fairly recently on the ML. Here is a link to the thread. https://www.mail-archive.com/ceph-users@xxxxxxxxxxxxxx/msg39465.html
On Fri, Nov 3, 2017 at 6:27 PM Kamila Součková <kamila@xxxxxx> wrote:
Hello,_______________________________________________we are in the process of selecting hardware for a cluster. We are wondering about RAM requirements. We found http://docs.ceph.com/docs/jewel/start/hardware-recommendations/#ram, but we are wondering:1. Is up to date? Are these numbers valid for Luminous?2. How valid is it for large disks, e.g. how much RAM does 1 OSD daemon need for an 8+TB hard drive?Thanks a lot!Kamila
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