Lenovo D1212, Hardware Installation And Maintenance Manual

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Figure 41. Rear Enclosure Mounting
CAUTION:
Use only the power cords supplied or cords that match the specification in section “AC Power Cords”
on page 118.
Once the enclosure is installed in the rack, dispose of the lifting straps. Due to the difficulty in attaching the
straps once the enclosure is installed in the rack, the straps are not suitable for removing the enclosure from
the rack.
Module Installation
Enclosures are supplied with the midplane PCB and all plug-in modules installed. For information on removal
and replacement of plug-in modules, refer to Chapter 6 “Module Removal and Replacement” on page 75.
Dummy Drive Carrier Modules
Note: 2U enclosures only.
To create a balanced airflow, all unused drive bays must hold dummy drive carrier modules.
Power Cord Connection
Connect the power cord(s) to the power distribution unit(s) (PDUs). For more information, refer to the
following figures.
Important: When more than one PCM is fitted, all power cords must be connected to at least two separate
and independent supplies to guarantee redundancy.
Important: When more than one PSU is fitted, connect each PSU to separate and independent supplies to
guarantee redundancy.
Figure 42. Typical AC Power Cable Connections to PCMs
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Lenovo Storage D1212/D1224/D3284Hardware Installation and Maintenance Guide