Hi all,
We're looking to deploy a stretch cluster for a 2-CPD deployment. I have
read the following docs:
https://docs.ceph.com/en/latest/rados/operations/stretch-mode/#stretch-clusters
I have some questions:
- Can we have multiple pools in a stretch cluster?
- Can we have multiple different crush rules in a stretch cluster? I'm
asking this because the command for stretch mode activation asks for a
rule...
We want to have different purpose pools on this Ceph cluster:
- Important VM disks, with 2 copies in each DC (SSD class)
- Ephemeral VM disks, with just 2 copies overall (SSD class)
- Backup data in just one DC (HDD class).
Objective of the 2-DC deployment is disaster recovery, HA isn't
required, but I'll take it if deployment is reasonable :-) .
Alternative would be a size=4/min=3 pool for important VM disks in a
no-strech cluster...
Thanks
Eneko Lacunza
Zuzendari teknikoa | Director técnico
Binovo IT Human Project
Tel. +34 943 569 206 |https://www.binovo.es
Astigarragako Bidea, 2 - 2º izda. Oficina 10-11, 20180 Oiartzun
https://www.youtube.com/user/CANALBINOVO
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