Technical Specifications

Switch Specifications

The following table lists the environmental specifications for the Cisco MDS 9220i switch:

Table 1. Environmental Specifications for the Cisco MDS 9220i Switch

Description

Specification

Temperature, ambient operating

32 to 104°F (0 to 40°C)

Temperature, ambient nonoperating and storage

-40 to 158°F (-40 to 70°C)

Humidity (RH), ambient (noncondensing) operating

10 to 90%

Humidity (RH), ambient (noncondensing) nonoperating and storage

10 to 95%

Altitude, operating

-197 to 6500 ft (-60 to 2000 m)

The following table lists the physical specifications for the Cisco MDS 9220i switch.

Table 2. Physical Specifications for the Cisco MDS 9220i Switch

Description

Specification

Dimensions (HxWxD)

1.72 x 17.3 x 20.11 in. (4.36 x 43.94 x 51.07 cm) excluding PSU, fan module handles, and USB stick

Rack Space

Chassis requires 1 RU (1.75 in. or 4.45 cm)

Weight

21.61 lb (9.8 kg) including two PSUs and four fans, but excluding optical modules

Airflow

  • Back to front (toward ports) using port-side exhaust fans

  • Front to back (into ports) using port-side intake fans

  • 50 CFM (0.02 m3/s) through system fan assembly at 25°C

  • 100 CFM (0.04 m3/s) maximum

We recommend that you maintain a minimum air space of 2.5 in. (6.4 cm) between walls and chassis air vents and a minimum horizontal separation of 6 in. (15.2 cm) between two chassis to prevent overheating.

Power Specifications

General Power Supply Specifications

The following table lists the specifications for the Cisco MDS 9220i switch AC input power supply:

AC Input Power

Specification

AC input voltage (500 W)

100 to 240 VAC

AC input voltage (1200 W HVAC)

(100 to 240 VAC) or (200 to 277 VAC)

AC input voltage (1200 W HVDC)

240 to 380 VAC

AC input frequency

Nominal = 50 to 60 Hz

Power supply output capacity

  • 500 W

  • 1200 W HVAC

  • 1200 W HVDC

Power supply output voltage

12 V +/- 5% up to 54 A

12 V +/- 5% up to 66.67 A

Output holdup time

20 ms

Power Supply Requirement Specifications

The following table provides a sample calculation of power for the Cisco MDS 9220i switch AC input power supply:

Table 3. Power Dissipation for AC Input Power Supply

Power Mode

Optics

Traffic Rate

Temperature

Voltage

PSU

Fan Modules

Power at AC 220 V

Power at AC 110 V

Power with HVDC

Typical

6 FC and 2 IPS ports

50%

Room

Normal

2

4

230 W

232 W

234 W

Max in 40°C

12 FC and 4 IPS ports

100%

40°C

Normal

2

4

280 W

283 W

285 W
Table 4. Power Supply Fuse Information

Part Number

PID

Type

Fuse Rated AMP

I2T

Fuse Melting Time

341-101232-01

DS-CAC-500W-I

Time-Lag

15 A

534

4 hrsmin@15 A, 2 smin@30 A

341-101237-01

DS-CAC-500W-E

660

30 min@22.5 A, 0.15 s@50 A

Component Power Requirements and Heat Dissipation

Consider heat dissipation when sizing the air-conditioning requirements for an installation. The power and heat associated with a Cisco MDS 9220i 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

The following table lists the power requirements and heat dissipation for the components of the Cisco MDS 9220i switch.

Table 5. Power Requirements and Heat Dissipation for the Cisco MDS 9220i Switch

Module Type/Product Number

Power Required (watts)

Heat Dissipation (BTU/hr)

Input Current

85VAC(amps)

110VAC(amps)

220VAC(amps)

240VDC(amps)

380VDC(amps)

Cisco MDS 9220i Fabric Switch

280 maximum

897

3.29

2.55

1.27

1.18

0.75

SFP, SFP+, or QSFP+ Transceiver Specifications

The Cisco MDS 9220i switch is compatible with SFP, SFP+, or QSFP+ transceivers and cables that have LC connectors. Each transceiver must match the transceiver at the other end of the cable in terms of wavelength. The cable must not exceed the stipulated cable length for reliable communications to take place.

Use only Cisco SFP, SFP+, or QSFP+ transceivers on the Cisco MDS 9220i switch. Each Cisco SFP, SFP+, or QSFP+ transceiver is encoded with model information that enables the switch to verify that the SFP, SFP+, or QSFP+ transceiver meets the requirements for the switch. For the list of supported SFP, SFP+, or QSFP+ transceivers, see the Cisco MDS 9000 Series Compatibility Matrix.

Use only genuine Cisco SFP+ transceivers in Cisco MDS series switches. Each Cisco SFP+ transceiver is encoded with serial number, vendor name, and other parameters that enable Cisco NX-OS to verify that the transceiver meets the requirements of the switch. If discrepancies are found, the SFP+ will be allowed to function, if possible, but will cause a warning syslog message to be generated. Cisco TAC does not support switch ports populated with non-Cisco SFP+ transceivers.

For details about SFP, SFP+, or QSFP+ transceivers see the Cisco MDS 9000 Family Pluggable Transceivers Data Sheet.

For information about safety, regulatory, and standards compliance, see the Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family.