On 6/18/12 4:07 PM, Koopmann, Jan-Peter wrote:
Thanks. Just noticed that the Hitachi 3TB drives are not available. The
4TB ones are but with 512b emulated only. However I can get Barracudas
7200.14 with supposedly real 4k quite cheap. Anyone any experience with
those? I might be getting one or two more and go for z2 instead of z1.

What makes you think the Barracuda 7200.14 drives report 4k sectors? I gave up looking for 4kn drives, as everything I could find was 512e. I would _love_ to be wrong, as I have 8 4TB Hitachis on backorder that I would gladly replace with 4kn drives, even if I had to drop to 3TB density.

From page 11 of http://www.seagate.com/staticfiles/support/docs/manual/desktop/Barracuda%207200.14/100686584c.pdf

Formatted capacity (512 bytes/sector)**
Bytes per sector (4K physical emulated at 512-byte sectors)

From the smartmontools list, http://www.mail-archive.com/smartmontools-database@lists.sourceforge.net/msg00537.html

Sector Sizes:     512 bytes logical, 4096 bytes physical

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