Technical information

IBM Europe, Middle East, and Africa Hardware
Announcement ZG14-0098
IBM is a registered trademark of International Business Machines Corporation
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Cable management arm
A folding arm is attached to the server's rails at the rear of the server. The server's
power cords and the cables from the PCIe adapters or integrated ports run through
the arm and into the rack. The arm enables the server to be pulled forward on
its rails for service access to PCIe slots, memory, processors, and so on without
disconnecting the cables from the server. Approximately 1 meter or 3 feet of cord/
cable length is needed for the arm.
Integrated I/O ports
In addition to the integrated SAS controllers and SAS ports associated with the
storage backplane, there are two HMC ports, one system port, and six USB ports.
The two HMC ports are RJ45 supporting 1Gb Ethernet connections.
The one system port is RJ45 and is supported by AIX and Linux for attaching serial
devices such as an asynchronous device like a console. If the device does not have
a RJ45 connection, a converter cable such as feature 3930 can provide a 9-pin D-
shell connection. Note that serial devices can have very individual characteristics
(different pin outs) and the feature 3930 may not be appropriate for all possible
devices. In this case, the user should acquire an OEM converter cable appropriate
for their device.
Four USB-3 ports available for general client use and two USB-2 ports are available
for limited client use. Two USB-3 ports are located on the front of the server, and
the other four USB ports (two USB-3 and two USB-2) are on the rear. The USB-2
ports are on the service processor card and there primarily for IBM use; however,
IBM i can use one of the USB-2 ports for communicating the status of a UPS
(uninterruptible power supply). A converter cable, feature ECCF, provides a USB-
to-9-pin D-Shell connection for this function. Connection to a serial port for this UPS
communication function for IBM i is not supported.
Accessibility by people with disabilities
A US Section 508 Voluntary Product Accessibility Template (VPAT) containing details
on accessibility compliance can be requested at
http://www.ibm.com/able/product_accessibility/index.html
Reliability, Availability, and Serviceability
Reliability, fault tolerance, and data correction
The reliability of systems starts with components, devices, and subsystems that
are designed to be highly reliable. During the design and development process,
subsystems go through rigorous verification and integration testing processes.
During system manufacturing, systems go through a thorough testing process to
help ensure the highest level of product quality.
Memory subsystem RAS
The memory has error detection and correction circuitry designed such that the
failure of any one specific memory module within an ECC word by itself can be
corrected absent any other fault.
In addition, a spare DRAM per rank on each memory port provides for dynamic
DRAM device replacement during runtime operation. Also, dynamic lane sparing on
the DMI link allows for repair of a faulty data lane.
Other memory protection features include retry capabilities for certain faults
detected at both the memory controller and the memory buffer. Memory is also
periodically scrubbed to allow for soft errors to be corrected and for solid single-cell