IBM TotalStorage 2109 M12, Installation And Service Manual

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a SERDES that accepts 10–bit wide parallel data and serializes it into a high-speed
serial stream. The parallel data is expected to be 8B/10B encoded data or
equivalent.
The ports are compatible with the following SFPs and SFP-compatible cables:
v
Optical SWL: 780–850 nm
v Optical LWL: 1270–1350 nm
The strength of the signal is determined by the type of SFP in use.
The ports are universal and self-configuring, and are capable of becoming F_ports,
FL_ports, or E_ports. These ports meet all the required safety standards.
Facility specifications
To ensure correct operation of the M12 , ensure that the facility meets the following
specifications:
v
Power requirements for a physical inlet:
– Input power requirements: 200–240 V ac, 24A, 50–60 Hz
– Recommended power connector
v An adequate supply circuit, line fusing, and wire size, according to the electrical
rating on the switch nameplate.
v
An air flow of at least 350 cubic feet per minute per switch, available in the
immediate vicinity of the M12.
v The power specifications listed in “Power specifications.”
v
The environmental specifications listed in “Environmental requirements” on page
90.
v
Interference less than the standard levels listed in Table 20 on page 90, under
Immunity.
Power specifications
CAUTION:
To remove power to the M12, disconnect both power cables.
The M12 supports F_port, FL_port, and E_port connections and distributed name
server (DNS). It is electro-magnetic compatibility (EMC) compliant.
The power supplies are universal and capable of functioning worldwide without
using voltage jumpers or switches. They meet IEC 61000–4–5 surge voltage
requirements and are autoranging in terms of accommodating input voltages and
line frequencies. Each power supply has its own built-in fan for cooling. The fans
push the air towards the port side of the chassis.
The power specifications listed in Table 18 on page 90 are calculated for
fully-loaded systems with four power supplies. A fully-loaded system has eight
16–port cards, two CP cards, and three blower assemblies.
Appendix A. Product specifications
89