Lenovo U510-7210US Optical drive swap for an HDD/SSD Caddy?

I'm plannign on buying this laptop model soon and have was just wondering if I would be able to swap the optical drive for an HDD/SSD caddy without any problems. I know this is possible, but my only concern is that the hard drive is 1 TB and the laptop also has a 24GB mSATA SDD slot. Since I'm probably going to never use the DVD drive, would swapping for the caddy cause any problems considering I would already have a hard drive AND a mSATA solid state drive?