You should take into account that the cluster is full at a utilization of 95% and no more client requests can be processed. 75% you will see a near_full warning in the ceph status. joachim.kraftmayer@clyso.com www.clyso.com Hohenzollernstr. 27, 80801 Munich Utting | HR: Augsburg | HRB: 25866 | USt. ID-Nr.: DE275430677 Am Mo., 18. Nov. 2024 um 14:07 Uhr schrieb Marc <Marc@f1-outsourcing.eu>:
Thanks! Very good links! :)
I need to subtract from the usable capacity max usable/server count to handle 1 server failure. Anything else I need to subtract?
https://docs.clyso.com/tools/erasure-coding-calculator/
Am Sa., 16. Nov. 2024 um 10:04 Uhr schrieb Marc Schoechlin <ms@256bit.org>:
Hi Anthony,
this is a nice one! The original mail had a broken link :-) https://www.osnexus.com/ceph-designer
Perhaps this would also be a good project to build an open platform that helps to do a dteailed planning of Ceph clusters in general (server and switch hardware, different types of pools, service distribution, placement groups, ....). Especially if it also had the option of using or creating hardware profiles (that the user creates himself or that interested hardware manufacturers can create) from different server and switch manufacturers and comparing them in terms of costs, energy consumption, throughput and usable memory.
Regards Marc
Am 15.11.24 um 16:55 schrieb Anthony D'Atri:
https://www.osnexus.com/ceph-designer
On Nov 15, 2024, at 10:51 AM, Marc<Marc@f1-outsourcing.eu> wrote:
I was wondering if there is some online tool that can help you with calculating usable storage from nodes, drives per node, replication/erasure used etc.