On 30 Červenec 2014, 5:12, Josh Berkus wrote: > Explained here: > https://www.usenix.org/system/files/conference/fast13/fast13-final80.pdf > > 13 out of 15 tested SSD's had various kinds of corruption on a power-out. > > (thanks, Neil!)
Well, only four of the devices supposedly had a power-loss protection (battery, capacitor, ...) so I guess it's not really that surprising the remaining 11 devices failed in a test like this. Although it really shouldn't damage the device, as apparently happened during the tests. Too bad they haven't mentioned which SSDs they've been testing specifically. While I understand the reason for that (HP Labs can't just point at products from other companies), it significantly limits the usefulness of the study. Too many companies are producing crappy consumer-level devices, advertising them as "enterprise". I could name a few ... Maybe it could be deciphered using the information in the paper (power-loss protection, year of release, ...). I'd expect to see Intel 320/710 to see there, but that seems not to be the case, because those devices were released in 2011 and all the four devices with power-loss protection have year=2012. Or maybe it's the year when that particular device was manufactured? regards Tomas -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
