Re: How to setup disk spindles for best performance - Mailing list pgsql-performance

Christiaan Willemsen wrote:
> So, what you are basically saying, is that a single mirror is in general
> more than enough to facilitate the transaction log.


http://www.commandprompt.com/blogs/joshua_drake/2008/04/is_that_performance_i_smell_ext2_vs_ext3_on_50_spindles_testing_for_postgresql/
http://wiki.postgresql.org/wiki/HP_ProLiant_DL380_G5_Tuning_Guide

And to answer your question, yes. Transaction logs are written
sequentially. You do not need a journaled file system and raid 1 is
plenty for most if not all work loads.

Sincerely,

Joshua D. Drake