How do I tell if my partition is aligned for a 64k/RAID-6?
jpiszcz at lucidpixels.com
Thu Dec 25 17:46:37 CST 2008
On Fri, 26 Dec 2008, Michal Soltys wrote:
>> I am not worried about the filesystem as the defaults usually get it right
>> but with parted, this is the first time I had to use it for home use and
>> with RAID-6 I am noticing slower performance with 15 disks (1 is a spare)
>> in RAID-6 (albeit slower 7200 ones, RE3s) than I was getting with 10
>> raptor150s in RAID-6 (but I had used fdisk there).
> For best effect - partition should start at 1920th sector (stripe width
> boundary), and su/sw should be appropriately set - su=64k,sw=13 in your
> case. Parted shows the values normally - from the beginning of the volume, 0
> I dropped some of CCs.
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