Ceph EC profile in Production

	A	B	C	D	E	F	G
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2					Ceph EC Profile In Prodution		(Locked for editing)
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4		K+M Values	Failure Domain	Pool Type(RBD, FS etc)	EC Plugin	Cache Tier in use?	Additional Comments
5	1	2+1	Host	FS	jerasure	Removed with 12.2.5	This is my small home cluster.
6	2	4+2	Host	RGW	jerasure	No	I inherited these clusters and don't know what these do. jerasure-per-chunk-alignment=false; technique=reed_sol_van; w=8
7	3	8+3	Host	RGW	jerasure	No	I inherited these clusters and don't know what these do. jerasure-per-chunk-alignment=false; technique=reed_sol_van; w=8
8	4	3+2	Host	FS	jerasure	No	EC pool only assigned to cephfs "backups" subtree
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10	6	10+4	Host	RGW	jerasure	no	It seemed like a good idea, but was not. Also using SMR and that is also a poor idea. OSDs use tons of RAM during recovery, 100G and more at times.
11	7	5+3	host	rbd	jerasure	no	works very well, lots of SSDs
12	8	22+2	host	cephfs	jerasure	yes	seen in the wild, does not really perform, suggested to change to a sane config
13	9	4+2	host	cephfs	jerasure	no
14	10	5+2	host	cephfs	jerasure	no	for backups
15	11	6+3	host	cephfs	jerasure	no	works well, HPC storage, 240 OSDs, 10 OSD servers
16	12	6+2	host	rbd	jerasure	yes	With cache removal planned, may be changed to 8+3
17	13	4+2	host	rbd	jerasure	no
18	14	8+2	Rack	Rbd + cephfs	Jerasure	No	We're migrating from 3 replicas and seem to be happy. 450+ OSDs. 24osd per node. 40gbps ethernet fabric. Mix of pure hdd and nvme Wal+db+hdd. Nvme use determined by performance requirements.
19	15	4+2	host	FS	Jerasure	No	works well, HPC storage, 196 OSDs, 6 OSD servers, +1 server with 32 OSDs to be added soon-ish, will soon move Metadata pool and WAL+DB of OSDs to NVMEs (currently on SSDs) for performance
20	16	6+3	Rack	librados	Jerasure	No	Worked well so far for archival storage, 540 OSD over 9 racks/hosts. All HDD with Bluestore + Luminous
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