Andy wrote:
SSD has its own cache. And in certain models such as Intel 320 that cache is backed by capacitors. So in a sense that cache acts as a BBU that's backed by capacitors instead of batteries.
Tests I did on the 320 series says it works fine: http://archives.postgresql.org/message-id/4D9D1FC3.4020207@xxxxxxxxxxxxxxx
And there's a larger discussion of this topic at http://blog.2ndquadrant.com/en/2011/04/intel-ssd-now-off-the-sherr-sh.html that answers this question in a bit more detail.
-- Greg Smith 2ndQuadrant US greg@xxxxxxxxxxxxxxx Baltimore, MD -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
