5137ch01.fm
Draft Document for Review October 14, 2014 10:19 am
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IBM Power Systems E870 and E880 Technical Overview and Introduction
1.4.4 Power supply features
This section describes how the system nodes and system control units are powered.
System node power
Four AC power supplies are required for each system node enclosure. This arrengement
provides 2+2 redundant power with dual power sources for enhanced system availability. A
failed power supply can be hot swapped but must remain in the system until the replacement
power supply is available for exchange.
Four AC power cords are used for each system node (one per power supply) and are ordered
using the AC Power Chunnel feature (#EBAA). The chunnel carries power from the rear of the
system node to the hot swap power supplies located in the front of the system node where
they are more accessible for service.
System control unit power
The system control unit is powered from the system nodes. UPIC cables provide redundant
power to the system control unit. Two UPIC cables attach to system node drawer 1 and two
UPIC cables attach to system node drawer 2. They are ordered with #ECCA and #ECCB. The
UPIC cords provides N+1 redundant power to the system control unit.
1.4.5 Processor card features
Each system must have a minimum of four active processors. Each processor card feature
will deliver a set of four identical processors. All processor cards in the system must be
identical. Cable features are required to connect system nodes to the system control unit and
to other system nodes.
For a single system node configuration, #ECCA is required. #ECCA provides cables to
connect the system node with the system control unit.
For a dual system node configuration, #ECCB is required. #ECCB provides cables to
connect the system nodes with the system control unit and cables to connect the two
system nodes.
The Power E870 has two types of processor cards, offering the following features:
4.024 GHz, (4 X 0/8-core) 32-core POWER8 processor (#EPBA)
4.190 GHz, (4 X 0/10-core) 40-core POWER8 processor (#EPBC)
The Power E880 has one type of processor card, offering the following features:
4.35 GHz, (4 X 0/8-core) 32-core POWER8 processor (#EPBB)
Several types of capacity on demand (CoD) processor options are available on the
Power E870 and Power 880 servers to help meet changing resource requirements in an
on-demand environment by using resources installed on the system but not activated. CoD
allows you to purchase additional permanent processor or memory capacity and dynamically
activate it when needed. The #EPJ3 provide no-charge elastic processor days for
Power E880.
1.4.6 Summary of processor features
Table 1-3 on page 15 summarizes the processor feature codes for the Power E870.