On Tue, 30 Sep 2014 15:26:31 +0100 Kingsley Tart wrote: > On Tue, 2014-09-30 at 00:30 +0900, Christian Balzer wrote: > > On Mon, 29 Sep 2014 11:15:21 +0200 Emmanuel Lacour wrote: > > > > > On Mon, Sep 29, 2014 at 05:57:12PM +0900, Christian Balzer wrote: > > > > > > > > Given your SSDs, are they failing after more than 150TB have been > > > > written? > > > > > > between 30 and 40 TB ... > > > > > That's low. One wonders what is going on here, Samsung being overly > > optimistic or something else... > > This isn't something I know much about so please do correct me if I'm > wrong, but might this be something to do with actual data size vs > written block size on the SSD? > You're quite correct and astute, but according to this article: http://www.anandtech.com/show/8239/update-on-samsung-850-pro-endurance-vnand-die-size it should be still 70TB at the worst case (very end of the article). It also doesn't mesh with the wear-out indicator levels Emmanuel is seeing, the drive should know best about its state of health and when it dies at about 40% something is very much off. Christian -- Christian Balzer Network/Systems Engineer chibi at gol.com Global OnLine Japan/Fusion Communications http://www.gol.com/
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