Drive Status Indicators; Blank Drive Carrier Modules - Dell EMC PowerVault ME4 Series Deployment Manual

Figure 3. Dual path LFF 3.5" drive carrier module
Figure 4. Dual path SFF 2.5" drive carrier module
Figure 5. 2.5" to 3.5" hybrid drive carrier adapter

Drive status indicators

Green and amber LEDs on the front of each drive carrier module indicate disk drive status.

Blank drive carrier modules

Blank drive carrier modules, also known as drive blanks, are provided in 3.5" (2U12) and 2.5" (2U24) form factors. They must be installed
in empty disk slots to create a balanced air flow.
12 Before you begin