3TB disc and block alignment

Dmitry Morozovsky marck at rinet.ru
Thu Feb 17 22:48:42 UTC 2011

On Thu, 17 Feb 2011, Daniel Kalchev wrote:

DK> > > > da0:<Hitachi HUA723030ALA640>  Fixed Direct Access SCSI-5 device
DK> > > > da0: 2861588MB (5860533168 512 byte sectors: 255H 63S/T 364801C)
DK> > 
DK> > Thanks -- is it also possible to have something like
DK> > 
DK> > da0: 2861588MB (732566646 4096 byte sectors: 255H 63S/T 364801C)
DK> > 
DK> According to Hitachi, this is an 512b drive.

Yep. A friend of mine a couple of weeks ago was involved in testing 3T disks 
available now in RU: 

- Hitachi Deskstar 7K3000: HDS723030ALA640
- Seagate Barracuda XT: ST33000651AS
- Western Digital Caviar Green: WD30EZRS-11J99B0

from which only the latter, according to the tests, uses 4k firmware sectors.

D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***

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