Do you have a question about the Harmonic MediaGrid ContentServer 4000 and is the answer not in the manual?
Description of the front panel disk drives, numbered 0-23 starting at top left.
Description of the rear panel power supply units.
Description of the rear panel 10 GbE NIC ports.
Information about rear panel onboard SAS ports.
Status and fault LEDs for Controller A.
Status and fault LEDs for Controller B.