Cisco MDS 9700 Series Hardware Installation Manual page 71

Product Overview
The Cisco MDS 9718 Director supports up to 16 hot-swappable 3000-W AC or DC power supplies.
The Cisco MDS 9710 Director supports up to eight hot-swappable 3000-W AC or DC power supplies.
The Cisco MDS 9706 Director supports up to four hot-swappable 3000-W AC or DC power supplies.
The 3000-W AC power supply unit may be connected to either 220 V or 110 V AC power sources. When
connected to 220 V each PSU has a maximum output capacity of 3000 W. When connected to 110 V each
PSU has a maximum output capacity of 1450 W.
Each power supply module monitors its output voltage and provides the status to the supervisor module. In
addition, the power supply modules provide information about local fans, power, shutdown control, and
E2PROM to the supervisor.
Note
The minimum number of AC PSUs required to achieve grid redundancy on each of the Cisco MDS 9700
Series Directors differ. For more information, see the AC Power Supply Requirements for Grid Redundancy
section. For more information on power supply specifications, see the Power Supply Specifications section
under the Technical Specifications chapter.
When PSUs are in 1450-W mode and the system is configured in redundant power mode, the total power
available to the system may not be sufficient to power all modules installed in the chassis. For more information,
refer to the Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide.
Starting from Cisco MDS NX-OS Release 6.2(19), all Cisco MDS NX-OS 6.2(x) releases support a 3500-W
high-voltage DC (HVDC) power supply unit (DS-CHV-3.5KW) on Cisco MDS 9706 and MDS 9710 Directors.
Starting from Cisco MDS NX-OS Release 8.3(1), a 3500-W high-voltage DC (HVDC) power supply unit
(DS-CHV-3.5KW) is supported on Cisco MDS 9718 Directors.
Starting from Cisco MDS NX-OS Release 8.1(1b), a 3500- W high-voltage DC (HVDC) power supply unit
(DS-CHV-3.5KW) is supported on Cisco MDS 9700 Series switches.
Figure 22: 3000-W AC Power Supply
Cisco MDS 9700 Series Switches Hardware Installation Guide
Power Supplies
57