On Thu, Sep 4, 2014 at 5:05 PM, Steve Robenalt <sroben...@highwire.org> wrote:
> We are migrating a small cluster on AWS from instances based on spinning > disks (using instance store) to SSD-backed instances and we're trying to > pick the proper instance type. Some of the recommendations for spinning > disks say to use different drives for log vs data partitions to avoid > issues with seek delays and contention for the disk heads. Since SSDs don't > have the same seek delays, is it still recommended to use 2 SSD drives? Or > is one sufficient? > The purpose of distinct mount points for commitlog and data is to allow the commitlog to operate in an append only manner without seeking. This is possible with SSD disk. =Rob
