On Sun, May 22, 2011 at 3:25 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: > > On 5/22/2011 5:09 AM, Brad Campbell wrote: > > On 22/05/11 17:04, Stan Hoeppner wrote: > >> It's difficult to align partitions properly on the Green drives due to > >> native 4K sectors translated by drive firmware to 512B sectors. The > >> Seagate SAS drive has native 512B sectors. > > > > Actually it's not difficult at all. You just make sure all your > > partitions start on an even multiple of 8 sectors. No magic in it. Just > > the same as all my SSD partitions start on 512k boundaries. > > IIRC from discussions here, mdadm has alignment issues with hybrid > sector size drives when assembling raw disks. Not everyone assembles > their md devices from partitions. Many assemble raw devices. Case in point: I have 4 of these 2TB Green drives in a RAID5 array. I assembled them from the raw devices (no partition table) without any special precautions. Am I in trouble? The array seems to be working fine... Tobias -- Tobias McNulty, Managing Member Caktus Consulting Group, LLC http://www.caktusgroup.com -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
