Lenovo ThinkSystem ST250 Setup Manual page 20

Only a maximum of six hard drives and not eight can be installed in the server if no ServeRAID SAS/SATA
controller is installed, but any of the following drives are installed:
• One optical disk drive
• Two optical disk drives
• One SATA M2 drive
• One SATA M2 drive and one optical disk drive
Front view of server models with six 3.5-inch
hot-swap drives
Figure 5. Front view of server models with six 3.5-inch or 2.5–inch hot-swap drives
ThinkSystem ST250 Setup Guide
16
Front view of server models with six 2.5-inch
hot-swap drives