Cisco SN 5420 Storage Router Hardware Installation Guide
Chapter 1 Product Overview
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Product Overview

Table Of Contents

Product Overview

SN 5420 Basic Description

Gigabit Ethernet Port

Fibre Channel Port

Management Ports

High Availability (HA) Port

Front-Panel LEDs

Fan Assembly

Power Supply


Product Overview


The Cisco SN 5420 storage router installation and configuration tasks consist of the following:

Install the SN 5420 storage router according to the Cisco SN 5420 Storage Router Hardware Installation Guide (this manual).

Configure the SN 5420 storage router software according to the Cisco SN 5420 Storage Router Software Configuration Guide.

Install and configure the Cisco SN iSCSI server drivers according to the README and example configuration files on the Cisco Storage Networking iSCSI Drivers CD shipped with your SN 5420 storage router. (In addition, you can access README and example configuration files from Cisco.com.)

This chapter is the starting point for installing the SN 5420 storage router hardware. The chapter provides some very basic information you should know before proceeding to other chapters in this manual and contains the following topics.

SN 5420 Basic Description

Gigabit Ethernet Port

Fibre Channel Port

Management Ports

High Availability (HA) Port

Front-Panel LEDs

Fan Assembly

Power Supply

SN 5420 Basic Description

The SN 5420 storage router provides servers with IP access to storage through SCSI routing using iSCSI protocol. With SCSI routing, servers use an IP network to access storage as if the servers were directly attached to the storage devices. (See Figure 1-1.)

Figure 1-1 SCSI Routing with the SN 5420 Storage Router


Note The iSCSI protocol is an IETF-defined protocol for IP storage (ips). For more information about the iSCSI protocol, refer to the IETF standards for IP storage at http://www.ietf.org.


The SN 5420 storage router is a 1U rack-mountable chassis that has one Gigabit Ethernet port, one Fibre Channel port, two management ports, one High Availability (HA) port, and a power connector. Figure 1-2 shows a front view of the SN 5420 chassis.

Figure 1-2 SN 5420 Storage Router Chassis

Gigabit Ethernet Port

The Gigabit Ethernet port, labeled GIGABIT ETH 2, is a 1000BASE-SX (short-wavelength) interface for connecting to servers requiring IP access to storage. (See Figure 1-3.) The port uses a duplex SC connector and has LEDs indicating its status.

Figure 1-3 Gigabit Ethernet Port, GIGABIT ETH 2

Fibre Channel Port

The Fibre Channel port, labeled FIBRE CHANNEL 1, is a 100-M5-SN-I / 100-M6-SN-I interface for connecting to storage controllers on a Fibre Channel network. (See Figure 1-4.) The Fibre Channel port functions as either a Fibre Channel N_Port or NL_Port, supporting point-to-point, loop, and fabric topologies. The port uses a duplex SC connector.

Figure 1-4 Fibre Channel Port, FIBRE CHANNEL 1

Management Ports

The SN 5420 storage router has two management ports: an RS-232 port for local console access and a 10/100 Ethernet port for network access.

The RS-232 management port, labeled CONSOLE, is serial interface for connecting to a serial port of a PC running terminal emulation software. (See Figure 1-5.) Using the RS-232 management port you can manage the storage router using the SN 5420 command-line interface (CLI). The port uses a male DB-9 connector.

Figure 1-5 RS-232 Management Port, CONSOLE

The 10/100 Ethernet management port, labeled MGMT 10/100, is a 10/100 Ethernet interface for connecting to a 10/100 Ethernet management network. (See Figure 1-6.) Through a management network you can manage the storage router using the CLI, the web-based GUI, or SNMP. The port uses an RJ-45 connector and has LEDs indicating its status.

Figure 1-6 10/100 Ethernet Management Port, MGMT 10/100

High Availability (HA) Port

The High Availability (HA) port, labeled HA 10/100, is a 10/100 Ethernet interface for connecting to a 10/100 Ethernet HA network. (See Figure 1-7.) The 10/100 Ethernet HA port allows the SN 5420 to function in a two-node cluster with another SN 5420 to provide fault-tolerant operation. The 10/100 Ethernet HA port uses an RJ-45 connector and has LEDs indicating its status.

Figure 1-7 10/100 Ethernet HA Port, HA 10/100

Front-Panel LEDs

The following LEDs are located on the front panel:

FAULT

STATUS

POWER

Gigabit Ethernet port LEDs

10/100 Ethernet management port LEDs

10/100 Ethernet HA port LEDs

The FAULT, STATUS, and POWER LEDs indicate the status of the SN 5420 storage router. The FAULT LED is located to the left of the RS-232 management port. The STATUS and POWER LEDs are located to the right of the RS-232 management port. Figure 1-8 shows the locations of the LEDs.

Figure 1-8 FAULT, STATUS, and POWER LEDs

The Gigabit Ethernet port has four LEDs, labeled LINK, RX, TX, and FAULT, that indicate the status of that port. The LINK and RX LEDs are located to the left of the Gigabit Ethernet port. The TX and FAULT LEDs are located to the right of the Gigabit Ethernet port. Figure 1-9 shows the locations of the Gigabit Ethernet port LEDs.

Figure 1-9 Gigabit Ethernet Port LEDs

The 10/100 Ethernet management port has two LEDs, labeled LINK and ACT, that indicate the status of that port. The LEDs are located to the left of the 10/100 Ethernet management port. Figure 1-10 shows the locations of the 10/100 Ethernet management port LEDs.

Figure 1-10 10/100 Ethernet Management Port LEDs

The 10/100 Ethernet HA port has two LEDs, labeled LINK and ACT, that indicate the status of that port. The LEDs are located to the left of the 10/100 Ethernet HA port. Figure 1-11 shows the locations of the 10/100 Ethernet HA port LEDs.

Figure 1-11 10/100 Ethernet HA Port LEDs

Table 1-1 describes the LEDs.

Table 1-1 LED Descriptions

LED
Color
Description

FAULT

Red

Error condition in storage router.

STATUS

Green

Yellow

On after successful boot up.

Flashing during boot up.

POWER

Green

Power is on.

Gigabit Ethernet

LINK

Green

Port is operational.

RX

Green

Packets are being received.

TX

Green

Packets are being transmitted.

FAULT

Red

Error condition with port.

10/100 Ethernet Management

LINK

Green

Port is operational.

ACT

Green

Packets are being transmitted or received.

10/100 Ethernet HA

LINK

Green

Port is operational.

ACT

Green

Packets are being transmitted or received.


Fan Assembly

The fan assembly provides cooling air for the internal chassis components. The fan exhausts air from the rear, and fresh air is drawn in from the sides of the chassis. (See Figure 1-12.)

Figure 1-12 Chassis Airflow

Power Supply

The SN 5420 storage router has an internal power supply that monitors its temperature and output voltages. If conditions reach critical thresholds, the power supply will shut down to avoid damage from excessive heat or electrical current.

The power supply connects to site power through a power cord and the power connector on the rear panel of the SN 5420 storage router (See Figure 1-13). The power connector houses the following components: a power receptacle, a power switch, a voltage selector (and indicator), and a cover. (See Figure 1-14.) Table 1-2 describes the power connector components.

Figure 1-13 Rear Panel, Power Connector

Figure 1-14 Power Connector Components

Table 1-2 Power Connector Components

Component
Description

Power Receptacle

Connects to input power cord.

Power Switch

A rocker switch that is labeled with I and O. Pressing I switches power on. Pressing O switches power off.

Voltage Selector (and indicator)

Provides the ability to select either of the following input voltages: 115 VAC/60 Hz or 230 VAC/50 Hz. The selected voltage is indicated by a label—either 115V or 230V—that is visible through a cutout in the cover. The factory setting is 115V. See Chapter 2 for the procedure on changing the voltage selector setting.

Cover

A hinged cover that provides access to the voltage selector if the voltage selector setting needs to be changed.