Cisco MDS 9000 Series Hardware Installation Guide

Power Supply Requirement Specifications
The following table provides a sample calculation of power for the switch AC power supply:
Table 5: Power Dissipation for AC Power Supply
Power at
220 V/50
Hz
(Watts)
Power at
110 V/60
Hz
(Watts)
Fan
Trays
Optics
Number
Optics
Speed
VoltageTemperatureTraffic
Rate
PSUPower
Mode
20521142432G-SWNominal25°C50%2Typical
240247448
228
23542464G-SW
286295448
20721342432G-SW
25°C100%2Max
24124844832G-SW
22923642464G-SW
29230144864G-SW
278
28644832G-SW40°C
31432344864G-SW
Table 6: Power Supply Fuse Information
Fuse Melting TimeI2t (Amps
2
seconds)Fuse Rating (Amp)Fuse TypePID
4 min@15 A
2 min@30 A
53415Time-lagDS-CAC-500W-I
30 min@22.5 A
0.15 s@50 A
660DS-CAC-500W-E
Component Power Requirements and Heat Dissipation
Consider heat dissipation when sizing the air-conditioning requirements for an installation. The power and
heat associated with switch varies based on the following considerations:
• The environment (temperature) outside the chassis
• Internal chassis temperature
• Any hardware component failure in the chassis
• Average switching traffic levels
Cisco MDS 9148V-K9 Switch Hardware Installation Guide
47
Technical Specifications
Power Supply Requirement Specifications

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available