On 28/06/11, David Brown wrote:
However, AFAIUI, you are wrong about TRIM being essential for the continued high performance of SSDs. As long as your SSDs have some over-provisioning (or you only partition something like 90% of the drive), and it's got good garbage collection, then TRIM will have minimal effect.
While you are mostly correct, over time even consumer SSDs will end up in this state.
Maybe I should have specified--my particular aim is to try and use (fairly high-end) consumer SSDs for "enterprise" server applications, hence the research into RAID. Most hardware RAID controllers that I know of don't pass on the TRIM command (for various reasons), so I was hoping to have more luck with software RAID.
Best, -- Tom De Mulder <tdm27@xxxxxxxxx> - Cambridge University Computing Service +44 1223 3 31843 - New Museums Site, Pembroke Street, Cambridge CB2 3QH -> 29/06/2011 : The Moon is Waning Crescent (18% of Full) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
