Synology DS713 Quick Installation Manual page 8

Important: Make sure the tray is inserted completely. Otherwise, the hard disk might not function properly.
6 Press the handle in to secure the hard drive tray in place.
7 Insert hard drive tray key into the hard drive tray lock. Turn the key clockwise (to the "I" position) to lock the
handle. Remove the key.
8 If you have prepared a second hard disk, repeat the steps above to install.
9 Disk position is numbered as shown below.
Note: If you wish to set up a RAID configuration, we recommended all installed hard disks be the same size in
order to optimize hard disk capacity usage.
8 Chapter 2: Hardware Setup