On Sun, Sep 22, 2013 at 4:02 PM, Shahryar Sedghi <firstname.lastname@example.org> wrote:This my first SSD experience. With normal disks we separate commit log from data. We have 2 SSDs dedicated to Cassandra I was wondering if we gain a better performance if we put commit log in one and data in another, or just use raid 0 to have both SSDs combined.
The primary win from separation comes when your head does not move while appending. As your SSDs have no heads, you do not get this win.=Rob