Hi Khodayar, Yes, you are correct. I would have to move objects manually between (more
than one) buckets if I use "Pool placements and Storage classes"
So you have successfully used this method and it was OK?
After we set up the new placement rule in the zone and zonegroups we modified users configuration to set the placement to use. It's worked well so far :). I'm happy to share how we set up the zones and zonegroups if you need that information. But I followed what I could find in the ceph docs.
I may be forced to use this method because clients needs more features than mere cache tiering.
Have you ever used S3 Browser "bucket lifecycle rules" and those "storage classes"?
We use s3 life cycle for data expiration but not for data transition. It looks like transitions are supported in Nautilus https://docs.ceph.com/docs/master/radosgw/placement/#storage-classes. Cheers, Tom