Power Supplies; Fpm Card - Compaq StorageWorks SAN Director 64 Installation Manual

1–4 SAN Director 64 Installation Guide

Power Supplies

The SAN Director 64 uses redundant, load-sharing power supplies which step down and
rectify facility input power to provide 48-Volt Direct Current (VDC) power to Director
FRUs. The power supplies also provide over-voltage and over-current protection. Either
power supply can be replaced while the switch is powered on and operational. Each power
supply has a separate backplane connection to allow for different AC power sources.
The power supplies are input rated at 85 to 264 volts alternating current (VAC). The
faceplate of each power supply provides the following status LEDs.
A green PWR OK LED lights if the power supply is operational and receiving AC
power.
An amber FAULT LED lights if the power supply fails.
An amber TEMP LED lights if the power supply shuts down due to an over
temperature condition.
An amber I LIM LED lights if the power supply is overloaded and operating at the
current limit (15.6 amperes).
Power supply requirements are listed in Appendix C, "Technical Specifications."

FPM Card

Each Fibre Port Module (FPM) card provides four full-duplex generic ports (G_Ports) that
transmit or receive data at 1.0625 gigabits per second (Gbps). G_Port functionality
depends on the type of cable attachment. FPM cards use Non-Open Fibre Control (NOFC)
Class 1 laser transceivers that comply with Section 21 of the Code of Federal Regulations
(CFR), Subpart (J) as of the date of manufacture.
Depending on device connections, G_Ports work as follows.
If the G_Port is attached to a Fibre Channel device, the port functions as a fabric port
(F_Port). An F_Port is the interface on a director that connects to a device N_Port.
If the G_Port is attached to another director to form an Interswitch Link (ISL), the port
functions as an expansion port (E_Port). A multi-switch fabric is formed through
multiple directors and ISLs.
Figure 1–2 shows the faceplate of an FPM.