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[Anatoliy Dobrosynets <question263908@xxxxxxxxxxxxxxxxxxxxx>]

Question #263908 on Graphite changed:
https://answers.launchpad.net/graphite/+question/263908

Anatoliy Dobrosynets proposed the following answer:
, or you can expand expand space for a particular group of metrics.

For example, you've got metrics named like "WAREHOUSE.*" , which you know are old and rarely used/updated. You don't need to store them on SSD (expensive and limited capacity)  - you can store them on a sperate slow-speed (cheap) drive, a pair of 3Tb 5400rpm in raid0. 
Just mount it into appropriate directory: 

ll /opt/graphite/storage/whisper/
total 52
drwxr-xr-x 13 graphite graphite 4096 Mar 17 12:41 ./
drwxr-xr-x  8 graphite graphite 4096 Mar 20 12:42 ../
drwxr-xr-x  4 graphite graphite 4096 Nov 24 22:17 WAREHOUSE/
drwxr-xr-x  8 graphite graphite 4096 Jan 16 06:47 statsd/
drwxr-xr-x  5 graphite graphite 4096 Feb 18 10:15 collectd/
drwxr-xr-x  4 graphite graphite 4096 Feb 26 11:05 carbon/
drwxr-xr-x  3 graphite graphite 4096 Feb  4 09:01 test/
drwxr-xr-x  4 graphite graphite 4096 Oct 19 09:44 jmxtrans/


df -hT /opt/graphite/storage/whisper/WAREHOUSE
Filesystem    Type  Size  Used Avail Use% Mounted on
/dev/mapper/graphite-warehouse ext4  782G  294G  449G  40% /opt/graphite/storage/WAREHOUSE

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