Drive Status Indicators; Dummy Drive Carrier Modules; Ddic In 5U Chassis; Dummy Drive Carrier Module - Seagate 5005 Series Hardware Installation And Maintenance Manual

Drive status indicators

Green and amber LEDs on the front of each drive carrier module indicate disk drive status. The SEP controls these LEDs.
"Disk drive carrier module LEDs" (page 84)

Dummy drive carrier modules

Dummy 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 drive slots to create a balanced air flow.
Figure 39 Dummy drive carrier module

DDIC in 5U chassis

Each disk drive is housed in a carrier that enables secure insertion of the disk drive into the drawer with the appropriate
SAS carrier transition card.
Figure 40 DDIC with 3.5" disk
describes the LED states.
(3.5" drive slot)
Figure 40 shows a DDIC with a 3.5" disk.
(2.5" drive slot)
Disk drive module 47