On 12/12/2012 09:17 AM, Evgeny Shishkin wrote: > > Actually most of low-end SSDs don't do write caching, they do not have > enough ram for that. Sandforce for example. > Or, worse, some of them do limited write caching but don't protect their write cache from power loss. Instant data corruption!
I would be extremely reluctant to use low-end SSDs for a database server. > If we are talking about dedicated machine for database with ssd > drives, why would anybody don't by hardware raid for about 500-700$? I'd want to consider whether the same money is better spent on faster, higher quality SSDs with their own fast write caches. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
