Prometheus as long time storage

[Rodolphe Ghio]

Hi everyone !

I'm going to use Prometheus as long time TS storage,

here's all specifications I would like to have :

- scrape : every minute

- retention : 10 years

- number of metrics : 50

- Number of point : 262 800 000 (  number of metric *  retentio(min))

I've read that Prometheus is using 1/2 bytes per sample so if we calcul the disk space I need, I'm between 262,8 mo and 525,6  mo.

So what are the problems I may face in my use case ?

Cheers,

Rodolphe G.

[sayf.eddi...@gmail.com]

The initial release of Prometheus was in 2012 so no one have tried it yet :D. I am not super expert but I think 50 metrics is manageable on such retention period (in your formula you forgot to take the labels into consideration). But keep in mind prometheus has no data protection schemes given it is a very long period I suggest using another storage system coupled with prometheus like M3db or victoria metrics

[Ben Kochie]

Yes, for that small a setup, the Prometheus TSDB is more than sufficient. With the snapshot system and regular backups, there should be no problems.

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