On 30 November 2010 03:09, Krunal Desai <mov...@gmail.com> wrote: > I assume it either: > > 1. does a really good job of 512-byte emulation that results in little > to no performance degradation > ( > http://consumer.media.seagate.com/2010/06/the-digital-den/advanced-format-drives-with-smartalign/ > references "test data")
2. "dynamically" looks to see if it even needs to do anything; if the > host OS is sending it requests that all 4k-aware/aligned, all is well. > My understanding is that this is merely saying that it will *align* the data correctly, with Windows XP, regardless of where Windows XP asks for the first sector to be. This has nothing to do with 512B random writes. > Though, the power-on hours count seems rather "low" > for me...8760 hours, or just 1 year of 24/7 operation. Not sure where you got this figure from, the "Barracuda Green" ( http://www.seagate.com/docs/pdf/datasheet/disc/ds1720_barracuda_green.pdf) is a different drive to the one we've been talking about in this thread ( http://www.seagate.com/docs/pdf/datasheet/disc/ds_barracuda_lp.pdf). I would note that the Seagate 2TB LP has a 0.32% Annualised Failure Rate. ie, in a given sample (which aren't overheating, etc) 32 from every 10,000 should fail. I *believe* that the Power On-Hours on the Barra Green is simply saying that it is designed for 24/7 usage. It's a per year number. I couldn't imagine them specifying the number of hours before failure like that, just below an AFR of 0.43. Cheers,
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