Some question about Mimir retention period in conf

Grafana Configuration
1

Hello, I’m trying to operate mimir with 4ea prometheus for HA for storing long term data from prometheus tsdb. and by following official documennt, I setup mimir with prometheues.

and then, I have some question about mimir.yaml configuration.

My questions are:

  • there are two configuration about retention period for storing data. in this case, the tsdb’s retention period means a period of mimir container’s local db period?

  • and the other, the compactor_blocks_retention_period means a period of minio(or s3 object storage) ?

  • finally, if you guys have long term period in object storage like 1y, how long days you set a retention period on your mimir and prometheus? very short like 7days?

in mimir.yml

blocks_storage:
   tsdb:
        dir: /data/ingester
        block_ranges_period:
            - 2h0m0s
        retention_period: 13h0m0s

limits:
    compactor_blocks_retention_period: 0s # default 1y