Mar 13, 2024
AC power distribution unit and rack content – Introduction to Power E1080
1.7.3 AC power distribution unit and rack content
The Power E1080 servers that are integrated into a rack at the factory feature PDUs that are mounted horizontally in the rack. Each PDU takes 1U of space in the rack. Mounting the PDUs vertically in the side of the rack can cause cable routing issues and interfere with optimal service access.
Two possible PDU ratings are supported: 60A/63A (orderable in most countries) and 30A/32A. Consider the following points:
Ê The 60A/63A PDU supports four system node power supplies and one I/O expansion drawer or eight I/O expansion drawers.
Ê The 30A/32A PDU supports two system node power supplies and one I/O expansion drawer or four I/O expansion drawers.
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Rack-integrated system orders require at least two of #7109, #7188, or #7196.
High-function PDUs provide more electrical power per PDU and offer better “PDU footprint” efficiency. In addition, they are intelligent PDUs that provide insight to power usage by receptacle and remote power on and off capability for easier support by individual receptacle. The new PDUs are orderable as #ECJJ, #ECJL, #ECJN, and #ECJQ.
High-function PDU FCs are listed in Table 1-20.
Table 1-20 Available high-function PDUs
In addition, the following high-function PDUs are available: Ê High Function 9xC19 PDU plus (#ECJJ)
This intelligent, switched 200-240 volt AC PDU includes nine C19 receptacles on the front of the PDU. The PDU is mounted on the rear of the rack, which makes the nine C19 receptacles easily accessible.
Ê High Function 9xC19 PDU plus 3-Phase (#ECJL)
This intelligent, switched 208 volt 3-phase AC PDU includes nine C19 receptacles on the front of the PDU. The PDU is mounted on the rear of the rack, which makes the nine C19 receptacles easily accessible.
Ê High Function 12xC13 PDU plus (#ECJN)
This intelligent, switched 200-240 volt AC PDU includes 12 C13 receptacles on the front of the PDU. The PDU is mounted on the rear of the rack, which makes the 12 C13 receptacles easily accessible.
Ê High Function 12xC13 PDU plus 3-Phase (#ECJQ)
This intelligent, switched 208 volt 3-phase AC PDU includes 12 C13 receptacles on the front of the PDU. The PDU is mounted on the rear of the rack, which makes the 12 C13 receptacles easily accessible.
Two or more additional PDUs can be installed horizontally in the rear of the rack. Mounting PDUs horizontally uses 1U per PDU and reduces the space that is available for other racked components. When mounting PDUs horizontally, the preferred approach is to use fillers in the EIA units that are occupied by these PDUs to facilitate proper air-flow and ventilation in the rack.
Each PDU requires one PDU-to-wall power cord. Various power cord features are available for various countries and applications by varying the PDU-to-wall power cord, which must be ordered separately.
Each power cord provides the unique design characteristics for the specific power requirements. To match new power requirements and save previous investments, these power cords can be requested with an initial order of the rack or with a later upgrade of the rack features.
36 IBM Power E1080: Technical Overview and Introduction
Table 1-21 lists the available wall power cord options for the 7188 and High Function PDUs and iPDU features, which must be ordered separately.
Table 1-21 Wall power cord options for the PDU and iPDU features
Notes: Ensure that the suitable power cord feature is configured to support the power that is being supplied. Based on the power cord that is used, the PDU can supply 4.8 – 19.2 kVA. The power of all the drawers that are plugged into the PDU must not exceed the power cord limitation.
o better enable electrical redundancy, each CEC has four power supplies that must be connected to separate PDUs, which are not included in the base order.
For maximum availability, a preferred approach is to connect power cords from the same system to two separate PDUs in the rack, and to connect each PDU to independent power sources.
For more information about power requirements of and the power cord for the 7965-94Y rack, see IBM Documentation.
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