Another option (which I'm using already) is to install the SSD in HDD place, and install the regular hdd into a caddy replacing the DVD drive.
There are such options on ebay and amazon (e.g. http://www.ebay.de/itm/Lenovo-39T2729-Laptop-CD-DVD-Drives-Burner-sowie-2-HDD-Adapter-/400999006283?...)
I don't need DVD too much those days, and I purchased an external DVD drive which I can share between this laptop and an ultrabook who doesn't have DVD anyway
This way I have windows and apps that I need to be very fast (development environment) installed on SSD, and I installed a 1 TB laptop hdd into the DVD caddy
There is no way to install a 2nd HD in N7110. The options are: external HD or to sacrifice the DVD player and install a HD there but an external DVD may be needed.
Is that correct?