On 26 January, 2011 - Benji sent me these 0,8K bytes: > Those WD20EARS emulate 512 bytes sectors, so yes you can freely mix > and match them with other "regular" 512 bytes drives. Some have > reported slower read/write speeds but nothing catastrophic.
For some workloads, 3x slower than it should be. > Or you can create a new 4K aligned pool (composed of only 4K drives!) > to really take advantage of them. For that, you will need a modified > zpool command to sets the ashift value of the pool to 12. A 4k aligned pool will work perfectly on a 512b aligned disk, it's just the other way that's bad. I guess ZFS could start defaulting to 4k, but ideally it should do the right thing depending on content (although that's hard for disks that are lying). /Tomas -- Tomas Ögren, st...@acc.umu.se, http://www.acc.umu.se/~stric/ |- Student at Computing Science, University of Umeå `- Sysadmin at {cs,acc}.umu.se _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
