> I'm using these drives for one of the vdevs in my pool. The pool was created > with ashift=12 (zpool binary > from http://digitaldj.net/2010/11/03/zfs-zpool-v28-openindiana-b147-4k-drives-and-you/), > which limits the minimum block size to 4KB, the same as the physical block > size on these drives. I haven't noticed any performance issues. These > obviously aren't 7200rpm drives, so you can't expect them to match those in > random IOPS.
The Seagate datasheet for those parts report 512-byte sectors. What is the deal with the ST32000542AS: native 512-byte sectors, native 4k-byte sector with selectable emulation, or native 4k-byte sectors with 512-byte sector emulation always on? Also, just a side note, I believe these drives achieve their "low-power" status with the reduced RPM (5900rpm), not with the head parking style power-management that WD Green drives use? The latter I've read is rather unsuitable for RAID operation (especially with HW RAID controllers). _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
