Power Supply Assembly - McDATA 316095-B21 - StorageWorks Edge Switch 2/24 Installation And Service Manual

General Information
1
Power Supply
Assembly
McDATA Sphereon 4500 Fabric Switch Installation and Service Manual
1-4
• Dual-rate shortwave laser (1.0625 or 2.1250 Gbps) - Shortwave
laser transceivers (850 nm) provide connectivity:
— At 500 meters (1.0625 Gbps) through 50-micron multimode
fiber-optic cable.
— At 300 meters (2.1250 Gbps) through 50-micron multimode
fiber-optic cable.
— At 300 meters (1.0625 Gbps) through 62.5-micron multimode
fiber-optic cable.
— At 150 meters (2.1250 Gbps) through 62.5-micron multimode
fiber-optic cable.
• Dual-rate longwave laser (1.0625 or 2.1250 Gbps) - Longwave
laser transceivers (1310 nm) provide connectivity at 10 kilometers
through 9-micron singlemode fiber-optic cable.
• Dual-rate extended longwave laser (1.0625 or 2.1250 Gbps) -
Longwave laser transceivers (1310 nm) provide connectivity at 20
or 35 kilometers through 9-micron singlemode fiber-optic cable.
The switch also provides a predictive optics monitoring (POM)
feature that monitors operation of SFP optical transceivers. Digital
diagnostics-enabled optical transceivers report temperature, voltage
current, transceiver power, and receiver power to product firmware.
Optical transceivers also provide vendor-specific threshold values for
these parameters.
The switch contains two power supply assemblies with internal
cooling fans. These redundant, load-sharing assemblies step down
and rectify facility input power to provide 3.3 volts direct current
(VDC), 5 VDC, and 12 VDC to the control processor (CTP) card. The
power supplies also provide input filtering, overvoltage protection,
and overcurrent protection.
Either power supply can be replaced while the switch is operational.
Each power supply has a separate connection to the CTP card to
allow for independent AC power sources. The power supplies are
input rated at 90 to 264 volts alternating current (VAC).
Three cooling fans integrated in each power supply (six fans total)
provide cooling for the power supplies and CTP card, as well as
redundancy for continued operation if a single fan fails. Fans are
removed and replaced as part of the integrated power supply.