Dell OptiPlex Small Form Factor Plus 7010 Owner's Manual page 47

Steps
1. Disconnect the data and power cables from the hard drive.
2. Press the tab on the hard-drive carrier and lift the hard-drive carrier.
3. Slide the hard-drive carrier away from the chassis and lift hard-drive carrier out of the disk-drive cage.
4. Pry the hard-drive carrier to release the mounting points on the carrier from the slots on the hard drive.
5. Lift the hard drive off the hard-drive carrier.
Removing and installing Customer Replaceable Units (CRUs) 47