We are using 1.5TB hard disk and 128GB RAM machine for storing map data using nominatim. Now the OSM data is growing faster. If it needs more than 2TB means,how can it be handled? How it will affect the performance?

asked 03 Sep '14, 13:54

vjaikrishnan's gravatar image

accept rate: 0%

How to do RAID configuration for a machine with 128GB RAM and more than 4TB hard disk? will it affect I/O performance?

(04 Sep '14, 06:20) vjaikrishnan

In Postgres you can move each table and index to a so called 'tablespace', which is a path in the file system. http://www.postgresql.org/docs/9.3/static/manage-ag-tablespaces.html

This way you can split the database onto several harddrives. The largest tables (planet_osm_ways, planet_osm_nodes, place) are all below 100GB.

I/O performance will probably be slightly better by using two harddrives.

permanent link

answered 28 Sep '14, 22:32

mtmail's gravatar image

accept rate: 29%

Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text](http://url.com/ "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 03 Sep '14, 13:54

question was seen: 2,346 times

last updated: 28 Sep '14, 22:32

powered by OSQA